• docs(openapi): clarify invoice email and integration contracts (#5)latest12942Docs22d128b2026-10-12 17:40

  Change detail

  63 changes across 16 operations

  AllBreakingWarningInfo

  • POST/sales/invoice
    • breaking

      the request property payments/dueDate became required

    • breaking

      the request property payments/isPaid became required

    • breaking

      the request property payments/isSplitPayment became required

    • breaking

      the request property payments/paymentMethod became required

    • breaking

      the allOf[subschema #1]/data response's property type changed from object to no type for status 200

    • warning

      the invoicePosition/items/quantity request property's min was set to 0.00

    • warning

      the invoicePosition/items/unitGrossPrice request property's min was set to 0.00

  View all changes (63)
• docs: Adjust info regarding the use of absolute dates in the system33Docs307b9552026-09-17 10:44

  Change detail

  6 changes across 2 operations

  AllBreakingWarningInfo

  • POST/sales/invoice
    • breaking

      the basicInformation/issueDate request property format changed from no format to date

    • breaking

      the basicInformation/saleDate request property format changed from no format to date

    • breaking

      the payments/dueDate request property format changed from no format to date

    • info

      added the new optional request property payments/paymentDate

    • info

      added the optional property validationErrors to the response with the 400 status

  • GET/sales/invoice
    • info

      added the optional property validationErrors to the response with the 400 status

• docs: describe OpenAPI company project listing1Docs60cada52026-09-15 14:06

  Change detail

  1 change across 1 operation

  AllBreakingWarningInfo

  • GET/company/projects
    • info

      endpoint added

• docs: explain project assignment when saving invoices1Docs3ce107e2026-09-14 12:33

  Change detail

  1 change across 1 operation

  AllBreakingWarningInfo

  • POST/sales/invoice
    • info

      added the new optional request property project

• docs: clarify invoice parties, VAT exemption and KSeF submission18Docsd342bc12026-09-14 09:54

  Change detail

  18 changes across 4 operations

  AllBreakingWarningInfo

  • GET/sales/invoice
    • info

      added the optional property data/invoice/additionalParties to the response with the 200 status

    • info

      added the optional property data/invoice/vatExemptionReason to the response with the 200 status

    • info

      added the optional property data/invoice/vatExemptionReasonDetailed to the response with the 200 status

    • info

      added the optional property data/relatedInvoices/items/additionalParties to the response with the 200 status

    • info

      added the optional property data/relatedInvoices/items/vatExemptionReason to the response with the 200 status

    • info

      added the optional property data/relatedInvoices/items/vatExemptionReasonDetailed to the response with the 200 status

  • POST/sales/invoice
    • info

      added the new optional request property additionalParties

  View all changes (18)
• 1.0no API changesDocs2026-07-13 14:11
• Add KSeF properties and `sendToKSEF` flag to OpenAPI definition13Docs9eaa55a2026-02-09 20:35
• Update OpenAPI specification to replace `fileId` with `invoiceId` in expense upload responses, and enhance descriptions for clarity. Added validation for `name` and `md5` fields, and introduced a new 222Docsd4e74af2025-09-26 09:04
• Initial config of sales endpoints321Docs1f7c8112024-08-26 06:56
• Add quickstart info1413Docs20b5c222024-08-26 06:49

Revisions go back to the API's first capture.