{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "object",
  "properties": {
    "invoiceMessage": {
      "type": "object",
      "properties": {
        "standardBusinessDocumentHeader": {
          "type": "object",
          "properties": {
            "headerVersion": {
              "type": "string"
            },
            "sender": {
              "type": "array",
              "items": [
                {
                  "type": "object",
                  "properties": {
                    "authority": {
                      "type": "string"
                    },
                    "value": {
                      "type": "string"
                    }
                  },
                  "required": [
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                    "value"
                  ]
                }
              ]
            },
            "receiver": {
              "type": "array",
              "items": [
                {
                  "type": "object",
                  "properties": {
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                      "type": "string"
                    },
                    "value": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "authority",
                    "value"
                  ]
                }
              ]
            },
            "documentIdentification": {
              "type": "object",
              "properties": {
                "standard": {
                  "type": "string"
                },
                "typeVersion": {
                  "type": "string"
                },
                "type": {
                  "type": "string"
                },
                "multipleType": {
                  "type": "string"
                },
                "instanceIdentifier": {
                  "type": "string"
                },
                "creationDateAndTime": {
                  "type": "string"
                }
              },
              "required": [
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                "typeVersion",
                "type",
                "multipleType",
                "instanceIdentifier",
                "creationDateAndTime"
              ]
            }
          },
          "required": [
            "headerVersion",
            "sender",
            "receiver",
            "documentIdentification"
          ]
        },
        "invoice": {
          "type": "array",
          "items": [
            {
              "type": "object",
              "properties": {
                "creationDateTime": {
                  "type": "string"
                },
                "documentStatusCode": {
                  "type": "string"
                },
                "invoiceIdentification": {
                  "type": "object",
                  "properties": {
                    "entityIdentification": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "entityIdentification"
                  ]
                },
                "invoiceType": {
                  "type": "string"
                },
                "invoiceCurrencyCode": {
                  "type": "string"
                },
                "buyer": {
                  "type": "object",
                  "properties": {
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                      "type": "string"
                    },
                    "additionalPartyIdentification": {
                      "type": "array",
                      "items": [
                        {
                          "type": "object",
                          "properties": {
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                              "type": "string"
                            },
                            "value": {
                              "type": "string"
                            },
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                          },
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                            "value",
                            "name"
                          ]
                        },
                        {
                          "type": "object",
                          "properties": {
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                              "type": "string"
                            },
                            "value": {
                              "type": "string"
                            },
                            "name": {
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                            }
                          },
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                            "value",
                            "name"
                          ]
                        }
                      ]
                    },
                    "organisationDetails": {
                      "type": "object",
                      "properties": {
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                          "type": "string"
                        },
                        "legalRegistration": {
                          "type": "null"
                        }
                      },
                      "required": [
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                        "legalRegistration"
                      ]
                    },
                    "address": {
                      "type": "null"
                    },
                    "contact": {
                      "type": "null"
                    },
                    "avpList": {
                      "type": "null"
                    }
                  },
                  "required": [
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                    "additionalPartyIdentification",
                    "organisationDetails",
                    "address",
                    "contact",
                    "avpList"
                  ]
                },
                "seller": {
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                  "properties": {
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                      "type": "string"
                    },
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                      "type": "array",
                      "items": [
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                          "type": "object",
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                              "type": "string"
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                            }
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                            "value",
                            "name"
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                      "properties": {
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                          "type": "string"
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                              "type": "object",
                              "properties": {
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                                  "type": "string"
                                },
                                "legalRegistrationNumber": {
                                  "type": "string"
                                }
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                                "legalRegistrationNumber"
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                        "legalRegistration"
                      ]
                    },
                    "address": {
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                    },
                    "contact": {
                      "type": "null"
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                      "properties": {
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                          "items": [
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                              "properties": {
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                                "qualifierCodeName": {
                                  "type": "string"
                                },
                                "qualifierCodeList": {
                                  "type": "null"
                                },
                                "qualifierCodeListVersion": {
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                                  "type": "string"
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                    "additionalPartyIdentification",
                    "organisationDetails",
                    "address",
                    "contact",
                    "avpList"
                  ]
                },
                "invoiceTotals": {
                  "type": "object",
                  "properties": {
                    "totalInvoiceAmount": {
                      "type": "object",
                      "properties": {
                        "currencyCode": {
                          "type": "string"
                        },
                        "value": {
                          "type": "number"
                        }
                      },
                      "required": [
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                        "value"
                      ]
                    },
                    "totalVATAmount": {
                      "type": "object",
                      "properties": {
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                          "type": "null"
                        },
                        "value": {
                          "type": "number"
                        }
                      },
                      "required": [
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                        "value"
                      ]
                    }
                  },
                  "required": [
                    "totalInvoiceAmount",
                    "totalVATAmount"
                  ]
                },
                "paymentTerms": {
                  "type": "array",
                  "items": [
                    {
                      "type": "object",
                      "properties": {
                        "netPaymentDue": {
                          "type": "object",
                          "properties": {
                            "dateDue": {
                              "type": "string"
                            }
                          },
                          "required": [
                            "dateDue"
                          ]
                        },
                        "paymentTermsDiscount": {
                          "type": "null"
                        }
                      },
                      "required": [
                        "netPaymentDue",
                        "paymentTermsDiscount"
                      ]
                    }
                  ]
                },
                "invoiceAllowanceCharge": {
                  "type": "array",
                  "items": [
                    {
                      "type": "object",
                      "properties": {
                        "allowanceChargeAmount": {
                          "type": "object",
                          "properties": {
                            "currencyCode": {
                              "type": "string"
                            },
                            "value": {
                              "type": "number"
                            }
                          },
                          "required": [
                            "currencyCode",
                            "value"
                          ]
                        },
                        "allowanceChargePercentage": {
                          "type": "number"
                        },
                        "allowanceChargeType": {
                          "type": "integer"
                        },
                        "allowanceOrChargeType": {
                          "type": "integer"
                        },
                        "amountPerUnit": {
                          "type": "null"
                        },
                        "baseAmount": {
                          "type": "null"
                        },
                        "baseNumberOfUnits": {
                          "type": "null"
                        },
                        "bracketIdentifier": {
                          "type": "null"
                        },
                        "effectiveDateTypecketIdentifier": {
                          "type": "integer"
                        },
                        "sequenceNumber": {
                          "type": "integer"
                        },
                        "settlementType": {
                          "type": "string"
                        },
                        "specialServiceType": {
                          "type": "integer"
                        },
                        "allowanceChargeDescription": {
                          "type": "null"
                        }
                      },
                      "required": [
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                        "allowanceChargePercentage",
                        "allowanceChargeType",
                        "allowanceOrChargeType",
                        "amountPerUnit",
                        "baseAmount",
                        "baseNumberOfUnits",
                        "bracketIdentifier",
                        "effectiveDateTypecketIdentifier",
                        "sequenceNumber",
                        "settlementType",
                        "specialServiceType",
                        "allowanceChargeDescription"
                      ]
                    }
                  ]
                },
                "invoiceLineItem": {
                  "type": "array",
                  "items": [
                    {
                      "type": "object",
                      "properties": {
                        "lineItemNumber": {
                          "type": "string"
                        },
                        "invoicedQuantity": {
                          "type": "object",
                          "properties": {
                            "measurementUnitCode": {
                              "type": "string"
                            },
                            "value": {
                              "type": "number"
                            }
                          },
                          "required": [
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                            "value"
                          ]
                        },
                        "amountInclusiveAllowancesCharges": {
                          "type": "object",
                          "properties": {
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                              "type": "string"
                            },
                            "value": {
                              "type": "number"
                            }
                          },
                          "required": [
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                            "value"
                          ]
                        },
                        "deliveredQuantity": {
                          "type": "null"
                        },
                        "itemPriceBaseQuantity": {
                          "type": "object",
                          "properties": {
                            "measurementUnitCode": {
                              "type": "string"
                            },
                            "value": {
                              "type": "number"
                            }
                          },
                          "required": [
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                            "value"
                          ]
                        },
                        "transactionalTradeItem": {
                          "type": "object",
                          "properties": {
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                              "type": "string"
                            },
                            "tradeItemQuantity": {
                              "type": "null"
                            },
                            "tradeItemDescription": {
                              "type": "object",
                              "properties": {
                                "languageCode": {
                                  "type": "null"
                                },
                                "value": {
                                  "type": "string"
                                }
                              },
                              "required": [
                                "languageCode",
                                "value"
                              ]
                            },
                            "transactionalItemData": {
                              "type": "null"
                            },
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                                  "type": "object",
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                                      "type": "null"
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                                      "type": "string"
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                                      "type": "string"
                                    }
                                  },
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                                    "additionalLogisticsUnitIdentificationTypeCode",
                                    "value"
                                  ]
                                },
                                {
                                  "type": "object",
                                  "properties": {
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                                      "type": "null"
                                    },
                                    "additionalLogisticsUnitIdentificationTypeCode": {
                                      "type": "string"
                                    },
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                                      "type": "string"
                                    }
                                  },
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                                    "additionalLogisticsUnitIdentificationTypeCode",
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                                  ]
                                }
                              ]
                            },
                            "avpList": {
                              "type": "object",
                              "properties": {
                                "ecomStringAttributeValuePairList": {
                                  "type": "array",
                                  "items": {}
                                }
                              },
                              "required": [
                                "ecomStringAttributeValuePairList"
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                            }
                          },
                          "required": [
                            "gtin",
                            "tradeItemQuantity",
                            "tradeItemDescription",
                            "transactionalItemData",
                            "additionalTradeItemIdentification",
                            "avpList"
                          ]
                        },
                        "purchaseOrder": {
                          "type": "object",
                          "properties": {
                            "entityIdentification": {
                              "type": "string"
                            },
                            "lineItemNumber": {
                              "type": "string"
                            }
                          },
                          "required": [
                            "entityIdentification",
                            "lineItemNumber"
                          ]
                        },
                        "despatchAdvice": {
                          "type": "object",
                          "properties": {
                            "entityIdentification": {
                              "type": "string"
                            }
                          },
                          "required": [
                            "entityIdentification"
                          ]
                        },
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                          "type": "object",
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                                      "type": "string"
                                    },
                                    "qualifierCodeList": {
                                      "type": "null"
                                    },
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                                      "type": "null"
                                    },
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                                      "type": "string"
                                    }
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                                {
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                                      "type": "string"
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                                {
                                  "type": "object",
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                                      "type": "string"
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                                {
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                      },
                      "required": [
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                        "invoicedQuantity",
                        "amountInclusiveAllowancesCharges",
                        "deliveredQuantity",
                        "itemPriceBaseQuantity",
                        "transactionalTradeItem",
                        "purchaseOrder",
                        "despatchAdvice",
                        "avpList"
                      ]
                    },
                    {
                      "type": "object",
                      "properties": {
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                          "type": "string"
                        },
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                          "type": "object",
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                              "type": "string"
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                        "amountInclusiveAllowancesCharges": {
                          "type": "object",
                          "properties": {
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                              "type": "string"
                            },
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                              "type": "number"
                            }
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                          "type": "null"
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                            },
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                              "type": "number"
                            }
                          },
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                            "value"
                          ]
                        },
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                              "type": "string"
                            },
                            "tradeItemQuantity": {
                              "type": "null"
                            },
                            "tradeItemDescription": {
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                              "properties": {
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                                  "type": "string"
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                                  "items": {}
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                            "tradeItemQuantity",
                            "tradeItemDescription",
                            "transactionalItemData",
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                        },
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                          "type": "object",
                          "properties": {
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                              "type": "string"
                            },
                            "lineItemNumber": {
                              "type": "string"
                            }
                          },
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                            "lineItemNumber"
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                        },
                        "despatchAdvice": {
                          "type": "object",
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                              "type": "string"
                            }
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                                      "type": "string"
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                                {
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                                {
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                                {
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}