{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://docs.datashift.com.au/edi/contracts/releases/1.0.4/schemas/invoice.schema.json",
  "title": "Invoice (INV) Canonical Schema",
  "description": "Public canonical Invoice contract used to request payment for goods or services supplied against purchase orders and shipments.",
  "version": "1.0.4",
  "type": "object",
  "required": [
    "docType",
    "correlationId",
    "timestamp",
    "metadata",
    "data"
  ],
  "properties": {
    "docType": {
      "const": "INV",
      "x-datashift-managed": true,
      "x-datashift-system": true,
      "description": "Canonical document type. For invoices this value is INV.",
      "x-order": 1
    },
    "correlationId": {
      "type": "string",
      "format": "uuid",
      "x-datashift-managed": true,
      "x-datashift-system": true,
      "description": "Stable UUID used to trace this invoice through order, shipment, and payment workflows.",
      "x-order": 2
    },
    "timestamp": {
      "type": "string",
      "format": "date-time",
      "description": "UTC timestamp indicating when DataShift created the canonical invoice.",
      "x-datashift-managed": true,
      "x-datashift-system": true,
      "x-order": 3
    },
    "metadata": {
      "type": "object",
      "description": "Public source metadata retained for integration troubleshooting.",
      "required": [
        "sourceLanguage",
        "sourceVersion",
        "userAgent"
      ],
      "properties": {
        "sourceLanguage": {
          "type": "string",
          "enum": [
            "json",
            "cxml"
          ],
          "x-order": 1
        },
        "sourceVersion": {
          "type": "string",
          "x-order": 2
        },
        "payloadId": {
          "type": "string",
          "description": "Original cXML payload ID",
          "x-order": 3
        },
        "userAgent": {
          "type": "string",
          "description": "System that generated the document",
          "x-order": 4
        }
      },
      "additionalProperties": false,
      "x-order": 4
    },
    "data": {
      "type": "object",
      "required": [
        "invoiceNumber",
        "poNumber",
        "invoiceDate",
        "purpose",
        "supplier",
        "billTo",
        "lineItems",
        "invoiceSummary"
      ],
      "properties": {
        "invoiceNumber": {
          "type": "string",
          "description": "Supplier-generated invoice number.",
          "x-order": 1
        },
        "poNumber": {
          "type": "string",
          "description": "Primary purchase order number this invoice bills against.",
          "x-order": 2
        },
        "invoiceDate": {
          "type": "string",
          "format": "date-time",
          "description": "Date and time the supplier issued the invoice.",
          "x-order": 3
        },
        "dueDate": {
          "type": "string",
          "format": "date-time",
          "description": "Payment due date.",
          "x-order": 4
        },
        "purpose": {
          "type": "string",
          "enum": [
            "standard",
            "creditMemo",
            "debitMemo",
            "lineLevelCreditMemo",
            "lineLevelDebitMemo"
          ],
          "default": "standard",
          "description": "Invoice business purpose.",
          "x-enum-descriptions": {
            "standard": "Standard invoice requesting payment.",
            "creditMemo": "Document reducing a previously invoiced amount.",
            "debitMemo": "Document increasing a previously invoiced amount.",
            "lineLevelCreditMemo": "Line-level credit against a previous invoice.",
            "lineLevelDebitMemo": "Line-level debit against a previous invoice."
          },
          "x-order": 5
        },
        "operation": {
          "type": "string",
          "enum": [
            "new",
            "update",
            "delete"
          ],
          "default": "new",
          "description": "Whether this creates, updates, or deletes an invoice",
          "x-order": 6
        },
        "invoiceOrigin": {
          "type": "string",
          "enum": [
            "supplier",
            "buyer"
          ],
          "description": "Whether invoice was originated by supplier or buyer (ERS)",
          "x-order": 7
        },
        "isInformationOnly": {
          "type": "boolean",
          "default": false,
          "description": "If true, invoice is for information only and no action required",
          "x-order": 8
        },
        "isERS": {
          "type": "boolean",
          "default": false,
          "description": "Evaluated Receipt Settlement invoice",
          "x-order": 9
        },
        "documentReference": {
          "type": "object",
          "description": "Reference to previous invoice (for credit/debit memos or cancellations)",
          "properties": {
            "invoiceId": {
              "type": "string",
              "x-order": 1
            },
            "invoiceDate": {
              "type": "string",
              "format": "date-time",
              "x-order": 2
            },
            "documentId": {
              "type": "string",
              "x-order": 3
            },
            "payloadId": {
              "type": "string",
              "x-order": 4
            }
          },
          "additionalProperties": false,
          "x-order": 10
        },
        "poReferences": {
          "type": "array",
          "description": "Purchase orders being invoiced.",
          "items": {
            "type": "object",
            "required": [
              "poNumber"
            ],
            "properties": {
              "poNumber": {
                "type": "string",
                "x-order": 1
              },
              "poVersion": {
                "type": "string",
                "x-order": 2
              },
              "documentId": {
                "type": "string",
                "x-order": 3
              },
              "payloadId": {
                "type": "string",
                "x-order": 4
              },
              "orderDate": {
                "type": "string",
                "format": "date-time",
                "x-order": 5
              }
            },
            "additionalProperties": false
          },
          "x-order": 11
        },
        "asnReference": {
          "type": "object",
          "description": "Shipment notice reference when invoicing against a dispatched shipment.",
          "properties": {
            "shipmentId": {
              "type": "string",
              "x-order": 1
            },
            "shipmentDate": {
              "type": "string",
              "format": "date-time",
              "x-order": 2
            },
            "documentId": {
              "type": "string",
              "x-order": 3
            },
            "payloadId": {
              "type": "string",
              "x-order": 4
            }
          },
          "additionalProperties": false,
          "x-order": 12
        },
        "supplier": {
          "title": "Party Definition",
          "description": "Supplier or seller issuing the invoice.",
          "type": "object",
          "properties": {
            "id": {
              "type": "string",
              "x-order": 1
            },
            "name": {
              "type": "string",
              "x-order": 2
            },
            "taxRegistrations": {
              "type": "array",
              "description": "Australian tax registrations for the party",
              "items": {
                "type": "object",
                "required": [
                  "type",
                  "value"
                ],
                "properties": {
                  "type": {
                    "type": "string",
                    "enum": [
                      "ABN"
                    ],
                    "x-order": 1
                  },
                  "value": {
                    "type": "string",
                    "x-order": 2
                  }
                },
                "additionalProperties": false
              },
              "x-order": 3
            },
            "contact": {
              "type": "object",
              "properties": {
                "name": {
                  "type": "string",
                  "x-order": 1
                },
                "phone": {
                  "type": "string",
                  "x-order": 2
                },
                "email": {
                  "type": "string",
                  "format": "email",
                  "x-order": 3
                },
                "role": {
                  "type": "string",
                  "x-order": 4
                }
              },
              "additionalProperties": false,
              "x-order": 4
            },
            "address": {
              "$ref": "./address.def.json",
              "x-order": 5
            }
          },
          "required": [
            "id",
            "name"
          ],
          "additionalProperties": false,
          "x-order": 13
        },
        "billTo": {
          "title": "Address Definition",
          "description": "Buyer billing party.",
          "type": "object",
          "properties": {
            "addressId": {
              "type": "string",
              "x-order": 1
            },
            "addressee": {
              "type": "string",
              "x-order": 2
            },
            "street1": {
              "type": "string",
              "x-order": 3
            },
            "street2": {
              "type": "string",
              "x-order": 4
            },
            "city": {
              "type": "string",
              "x-order": 5
            },
            "state": {
              "type": "string",
              "x-order": 6
            },
            "postalCode": {
              "type": "string",
              "x-order": 7
            },
            "country": {
              "type": "string",
              "enum": [
                "AU"
              ],
              "x-order": 8
            }
          },
          "required": [
            "addressee",
            "street1",
            "city",
            "state",
            "postalCode",
            "country"
          ],
          "additionalProperties": false,
          "x-order": 14
        },
        "soldTo": {
          "allOf": [
            {
              "title": "Address Definition",
              "description": "Standard address structure for DataShift canonical documents",
              "type": "object",
              "properties": {
                "addressId": {
                  "type": "string",
                  "x-order": 1
                },
                "addressee": {
                  "type": "string",
                  "x-order": 2
                },
                "street1": {
                  "type": "string",
                  "x-order": 3
                },
                "street2": {
                  "type": "string",
                  "x-order": 4
                },
                "city": {
                  "type": "string",
                  "x-order": 5
                },
                "state": {
                  "type": "string",
                  "x-order": 6
                },
                "postalCode": {
                  "type": "string",
                  "x-order": 7
                },
                "country": {
                  "type": "string",
                  "enum": [
                    "AU"
                  ],
                  "x-order": 8
                }
              },
              "required": [
                "addressee",
                "street1",
                "city",
                "state",
                "postalCode",
                "country"
              ],
              "additionalProperties": false
            }
          ],
          "description": "Sold-to party (may differ from bill-to)",
          "x-order": 15
        },
        "shipTo": {
          "title": "Address Definition",
          "description": "Standard address structure for DataShift canonical documents",
          "type": "object",
          "properties": {
            "addressId": {
              "type": "string",
              "x-order": 1
            },
            "addressee": {
              "type": "string",
              "x-order": 2
            },
            "street1": {
              "type": "string",
              "x-order": 3
            },
            "street2": {
              "type": "string",
              "x-order": 4
            },
            "city": {
              "type": "string",
              "x-order": 5
            },
            "state": {
              "type": "string",
              "x-order": 6
            },
            "postalCode": {
              "type": "string",
              "x-order": 7
            },
            "country": {
              "type": "string",
              "enum": [
                "AU"
              ],
              "x-order": 8
            }
          },
          "required": [
            "addressee",
            "street1",
            "city",
            "state",
            "postalCode",
            "country"
          ],
          "additionalProperties": false,
          "x-order": 16
        },
        "remitTo": {
          "type": "object",
          "description": "Address where payment should be sent",
          "properties": {
            "addressId": {
              "type": "string",
              "x-order": 1
            },
            "addressee": {
              "type": "string",
              "x-order": 2
            },
            "street1": {
              "type": "string",
              "x-order": 3
            },
            "street2": {
              "type": "string",
              "x-order": 4
            },
            "city": {
              "type": "string",
              "x-order": 5
            },
            "state": {
              "type": "string",
              "x-order": 6
            },
            "postalCode": {
              "type": "string",
              "x-order": 7
            },
            "country": {
              "type": "string",
              "enum": [
                "AU"
              ],
              "x-order": 8
            },
            "bankDetails": {
              "type": "object",
              "properties": {
                "bankName": {
                  "type": "string",
                  "x-order": 1
                },
                "accountName": {
                  "type": "string",
                  "x-order": 2
                },
                "accountNumber": {
                  "type": "string",
                  "x-order": 3
                },
                "bsb": {
                  "type": "string",
                  "x-order": 4
                },
                "swift": {
                  "type": "string",
                  "x-order": 5
                },
                "iban": {
                  "type": "string",
                  "x-order": 6
                }
              },
              "additionalProperties": false,
              "x-order": 9
            }
          },
          "additionalProperties": false,
          "x-order": 17
        },
        "shipping": {
          "type": "object",
          "description": "Commercial freight charges and instructions for the invoice.",
          "properties": {
            "amount": {
              "type": "number",
              "multipleOf": 0.01,
              "x-order": 1
            },
            "currency": {
              "title": "Currency Enumeration",
              "description": "ISO 4217 currency codes supported by DataShift canonical schemas",
              "type": "string",
              "enum": [
                "AUD"
              ],
              "x-order": 2
            },
            "carrier": {
              "type": "string",
              "x-order": 3
            },
            "route": {
              "type": "string",
              "x-order": 4
            },
            "shippingInstructions": {
              "type": "string",
              "x-order": 5
            },
            "buyerAcctNumber": {
              "type": "string",
              "x-order": 6
            },
            "incoTerms": {
              "type": "string",
              "enum": [
                "cfr",
                "cif",
                "cip",
                "cpt",
                "daf",
                "dap",
                "ddp",
                "ddu",
                "dpu",
                "deq",
                "des",
                "exw",
                "fas",
                "fca",
                "fob"
              ],
              "x-order": 7
            }
          },
          "additionalProperties": false,
          "x-order": 18
        },
        "shipmentDetails": {
          "type": "object",
          "description": "Actual dispatch and tracking information for the invoiced goods",
          "properties": {
            "carrier": {
              "type": "string",
              "x-order": 1
            },
            "trackingNumber": {
              "type": "string",
              "x-order": 2
            },
            "shippingDate": {
              "type": "string",
              "format": "date-time",
              "x-order": 3
            }
          },
          "additionalProperties": false,
          "x-order": 19
        },
        "paymentTerms": {
          "type": "object",
          "description": "Payment terms and conditions",
          "properties": {
            "description": {
              "type": "string",
              "description": "Human-readable payment terms (e.g., 'Net 30', '2/10 Net 30')",
              "x-order": 1
            },
            "netDays": {
              "type": "integer",
              "description": "Number of days until payment is due",
              "x-order": 2
            },
            "discountTerms": {
              "type": "array",
              "description": "Early payment discount tiers",
              "items": {
                "type": "object",
                "properties": {
                  "discountPercent": {
                    "type": "number",
                    "multipleOf": 0.01,
                    "description": "Discount percentage (e.g., 2 for 2%)",
                    "x-order": 1
                  },
                  "discountDays": {
                    "type": "integer",
                    "description": "Days within which discount applies",
                    "x-order": 2
                  },
                  "discountDueDate": {
                    "type": "string",
                    "format": "date",
                    "description": "Specific date by which discount applies",
                    "x-order": 3
                  }
                },
                "additionalProperties": false
              },
              "x-order": 3
            }
          },
          "additionalProperties": false,
          "x-order": 20
        },
        "contacts": {
          "type": "array",
          "description": "Contact information for various roles",
          "items": {
            "type": "object",
            "required": [
              "role"
            ],
            "properties": {
              "role": {
                "type": "string",
                "enum": [
                  "issuerOfInvoice",
                  "soldTo",
                  "billTo",
                  "remitTo",
                  "shipFrom",
                  "shipTo"
                ],
                "x-order": 1
              },
              "name": {
                "type": "string",
                "x-order": 2
              },
              "email": {
                "type": "string",
                "format": "email",
                "x-order": 3
              },
              "phone": {
                "type": "string",
                "x-order": 4
              }
            },
            "additionalProperties": false
          },
          "x-order": 21
        },
        "comments": {
          "type": "string",
          "maxLength": 2000,
          "description": "Invoice-level comments or notes",
          "x-order": 22
        },
        "lineItems": {
          "type": "array",
          "minItems": 1,
          "items": {
            "type": "object",
            "required": [
              "invoiceLineNumber",
              "quantity",
              "unitPrice",
              "subtotal",
              "currency"
            ],
            "properties": {
              "invoiceLineNumber": {
                "type": "integer",
                "description": "Supplier's line number for this invoice line.",
                "x-order": 1
              },
              "uniqueLineKey": {
                "type": "string",
                "description": "DataShift-managed stable line key from the original purchase order.",
                "x-datashift-managed": true,
                "x-datashift-system": true,
                "x-order": 2
              },
              "poLineReference": {
                "type": "integer",
                "description": "Line number from the purchase order being invoiced.",
                "x-order": 3
              },
              "asnLineReference": {
                "type": "integer",
                "description": "Line number from the ship notice",
                "x-order": 4
              },
              "supplierItemId": {
                "type": "string",
                "description": "Supplier's part/item number",
                "x-order": 5
              },
              "buyerItemId": {
                "type": "string",
                "description": "Buyer's part/item number",
                "x-order": 6
              },
              "description": {
                "type": "string",
                "description": "Item description",
                "x-order": 7
              },
              "quantity": {
                "type": "number",
                "multipleOf": 0.01,
                "description": "Quantity invoiced.",
                "x-order": 8
              },
              "unitOfMeasure": {
                "title": "REC20 Unit of Measure Codes",
                "description": "UN/ECE Recommendation 20 unit of measure codes for DataShift canonical documents",
                "type": "string",
                "enum": [
                  "AY",
                  "BG",
                  "BL",
                  "BR",
                  "BLL",
                  "E2",
                  "BO",
                  "BX",
                  "BJ",
                  "BE",
                  "KA",
                  "CA",
                  "CG",
                  "CT",
                  "CQ",
                  "CS",
                  "CMT",
                  "CL",
                  "CH",
                  "MTQ",
                  "CY",
                  "DAY",
                  "DC",
                  "DZN",
                  "DR",
                  "EA",
                  "FOT",
                  "GRM",
                  "HUR",
                  "CEN",
                  "INH",
                  "JR",
                  "KGM",
                  "KMT",
                  "KT",
                  "LN",
                  "LK",
                  "LTR",
                  "MTR",
                  "TNE",
                  "MLT",
                  "MMT",
                  "MON",
                  "PK",
                  "PD",
                  "PL",
                  "PR",
                  "D97",
                  "C62",
                  "PG",
                  "LBR",
                  "RL",
                  "RO",
                  "SA",
                  "SE",
                  "SET",
                  "ST",
                  "SO",
                  "MTK",
                  "U3",
                  "MIL",
                  "TU",
                  "WEE"
                ],
                "x-order": 9
              },
              "unitPrice": {
                "type": "number",
                "multipleOf": 0.0001,
                "description": "Unit price",
                "x-order": 10
              },
              "subtotal": {
                "type": "number",
                "multipleOf": 0.01,
                "description": "Line subtotal before tax and adjustments.",
                "x-order": 11
              },
              "taxAmount": {
                "type": "number",
                "multipleOf": 0.01,
                "description": "Tax amount for this line",
                "x-order": 12
              },
              "taxRate": {
                "type": "number",
                "multipleOf": 0.01,
                "description": "Tax rate as percentage (e.g., 10 for 10%)",
                "x-order": 13
              },
              "discountAmount": {
                "type": "number",
                "multipleOf": 0.01,
                "description": "Discount amount for this line",
                "x-order": 14
              },
              "shippingAmount": {
                "type": "number",
                "multipleOf": 0.01,
                "description": "Shipping charge for this line",
                "x-order": 15
              },
              "grossAmount": {
                "type": "number",
                "multipleOf": 0.01,
                "description": "Subtotal + tax + shipping before discounts",
                "x-order": 16
              },
              "netAmount": {
                "type": "number",
                "multipleOf": 0.01,
                "description": "Gross amount minus discounts",
                "x-order": 17
              },
              "currency": {
                "title": "Currency Enumeration",
                "description": "ISO 4217 currency code for this line.",
                "type": "string",
                "enum": [
                  "AUD"
                ],
                "x-order": 18
              },
              "manufacturerPartId": {
                "type": "string",
                "description": "Manufacturer's part number",
                "x-order": 19
              },
              "manufacturerName": {
                "type": "string",
                "description": "Manufacturer name",
                "x-order": 20
              },
              "countryOfOrigin": {
                "type": "string",
                "enum": [
                  "AU"
                ],
                "description": "Country where item was manufactured",
                "x-order": 21
              },
              "serialNumbers": {
                "type": "array",
                "items": {
                  "type": "string"
                },
                "description": "Serial numbers for serialized items",
                "x-order": 22
              },
              "batchId": {
                "type": "string",
                "description": "Lot/batch ID",
                "x-order": 23
              },
              "classification": {
                "type": "array",
                "description": "Product classification codes",
                "items": {
                  "type": "object",
                  "properties": {
                    "domain": {
                      "type": "string",
                      "enum": [
                        "UNSPSC",
                        "HS",
                        "commodity"
                      ],
                      "description": "Classification scheme",
                      "x-order": 1
                    },
                    "code": {
                      "type": "string",
                      "x-order": 2
                    }
                  },
                  "additionalProperties": false
                },
                "x-order": 24
              },
              "comments": {
                "type": "string",
                "maxLength": 500,
                "description": "Line-level comments",
                "x-order": 25
              }
            },
            "additionalProperties": false
          },
          "description": "Invoice lines. DataShift manages uniqueLineKey correlation back to PO and ASN lines where needed.",
          "x-order": 23
        },
        "invoiceSummary": {
          "type": "object",
          "required": [
            "subtotal",
            "taxAmount",
            "dueAmount",
            "currency"
          ],
          "description": "Invoice totals, tax, discounts, and amount due.",
          "properties": {
            "subtotal": {
              "type": "number",
              "multipleOf": 0.01,
              "description": "Sum of all line subtotals",
              "x-order": 1
            },
            "shippingAmount": {
              "type": "number",
              "multipleOf": 0.01,
              "description": "Total shipping charges",
              "x-order": 2
            },
            "specialHandlingAmount": {
              "type": "number",
              "multipleOf": 0.01,
              "description": "Special handling charges",
              "x-order": 3
            },
            "taxAmount": {
              "type": "number",
              "multipleOf": 0.01,
              "description": "Total tax amount",
              "x-order": 4
            },
            "taxBreakdown": {
              "type": "array",
              "description": "Tax breakdown by type/jurisdiction",
              "items": {
                "type": "object",
                "properties": {
                  "taxType": {
                    "type": "string",
                    "enum": [
                      "GST",
                      "VAT",
                      "salesTax",
                      "excise",
                      "other"
                    ],
                    "description": "Type of tax",
                    "x-order": 1
                  },
                  "taxRate": {
                    "type": "number",
                    "multipleOf": 0.01,
                    "description": "Tax rate as percentage",
                    "x-order": 2
                  },
                  "taxableAmount": {
                    "type": "number",
                    "multipleOf": 0.01,
                    "description": "Amount subject to this tax",
                    "x-order": 3
                  },
                  "taxAmount": {
                    "type": "number",
                    "multipleOf": 0.01,
                    "description": "Calculated tax amount",
                    "x-order": 4
                  },
                  "jurisdiction": {
                    "type": "string",
                    "description": "Tax jurisdiction (e.g., state, country)",
                    "x-order": 5
                  },
                  "description": {
                    "type": "string",
                    "x-order": 6
                  }
                },
                "additionalProperties": false
              },
              "x-order": 5
            },
            "discountAmount": {
              "type": "number",
              "multipleOf": 0.01,
              "description": "Total discount amount",
              "x-order": 6
            },
            "grossAmount": {
              "type": "number",
              "multipleOf": 0.01,
              "description": "Subtotal + tax + shipping + handling before discounts",
              "x-order": 7
            },
            "netAmount": {
              "type": "number",
              "multipleOf": 0.01,
              "description": "Gross amount minus discounts",
              "x-order": 8
            },
            "depositAmount": {
              "type": "number",
              "multipleOf": 0.01,
              "description": "Prepayment/deposit already received",
              "x-order": 9
            },
            "dueAmount": {
              "type": "number",
              "multipleOf": 0.01,
              "description": "Amount due (net - deposits)",
              "x-order": 10
            },
            "currency": {
              "title": "Currency Enumeration",
              "description": "ISO 4217 currency codes supported by DataShift canonical schemas",
              "type": "string",
              "enum": [
                "AUD"
              ],
              "x-order": 11
            }
          },
          "additionalProperties": false,
          "x-order": 24
        },
        "extrinsics": {
          "type": "object",
          "description": "Partner-specific extension fields that are not part of the canonical core contract.",
          "additionalProperties": {
            "x-additionalPropertiesName": "extensionField",
            "description": "Partner-specific extension value."
          },
          "x-order": 25
        }
      },
      "additionalProperties": false,
      "description": "Business payload for the invoice.",
      "x-order": 5
    }
  },
  "additionalProperties": false,
  "examples": [
    {
      "docType": "INV",
      "correlationId": "43e7580b-e592-46bb-a3d0-dbf8997758d9",
      "timestamp": "2026-05-16T04:00:00Z",
      "metadata": {
        "sourceLanguage": "cxml",
        "sourceVersion": "1.2.067",
        "payloadId": "inv-example-10001",
        "userAgent": "Example Supplier Gateway"
      },
      "data": {
        "invoiceNumber": "INV-10001",
        "poNumber": "PO-10001",
        "invoiceDate": "2026-05-16T04:00:00Z",
        "dueDate": "2026-06-15T00:00:00Z",
        "purpose": "standard",
        "poReferences": [
          {
            "poNumber": "PO-10001",
            "poVersion": "1"
          }
        ],
        "supplier": {
          "id": "SUPPLIER-AU",
          "name": "Example Supplier Pty Ltd",
          "taxRegistrations": [
            {
              "type": "ABN",
              "value": "98765432109"
            }
          ],
          "address": {
            "addressee": "Example Supplier Pty Ltd",
            "street1": "20 Supplier Street",
            "city": "Adelaide",
            "state": "SA",
            "postalCode": "5000",
            "country": "AU"
          }
        },
        "billTo": {
          "addressee": "Example Buyer Accounts",
          "street1": "1 Market Street",
          "city": "Sydney",
          "state": "NSW",
          "postalCode": "2000",
          "country": "AU"
        },
        "lineItems": [
          {
            "invoiceLineNumber": 1,
            "uniqueLineKey": "PO-10001-1",
            "poLineReference": 1,
            "supplierItemId": "SUP-001",
            "buyerItemId": "BUY-001",
            "description": "Example product",
            "quantity": 12,
            "unitOfMeasure": "EA",
            "unitPrice": 25,
            "subtotal": 300,
            "taxAmount": 30,
            "currency": "AUD"
          }
        ],
        "invoiceSummary": {
          "subtotal": 300,
          "taxAmount": 30,
          "grossAmount": 330,
          "netAmount": 330,
          "dueAmount": 330,
          "currency": "AUD"
        },
        "extrinsics": {
          "accountsReference": "AP-10001"
        }
      }
    }
  ]
}