Update a vendor bill

Operation ID: updateVendorBill

Group: Accounting › Vendor Bills

Open in the interactive reference

PATCH /accounting/vendor-bills/{id}

Retry-safe: A write that accepts Idempotency-Key: repeating a request with the same key replays the stored answer instead of executing twice.

Updates a vendor bill with the fields you send. A field you leave out keeps its current value. Line items change through three separate arrays, applied in this order: deleteLines, updateLines, createLines.

Leave out all three to keep the lines as they are. On an updateLines item, a field you leave out keeps its current value, and amortization schedules change through createAmortizationSchedules, updateAmortizationSchedules and deleteAmortizationSchedules.

The bill's main fields and its line items can change in one request.

One request can remove a line and add its replacement.

updateLines and deleteLines name each line by the id that GET accounting/vendor-bills/:id returns for it. Each line must belong to this bill. Amounts on the lines this request writes are in currency, or in the bill's current currency when currency is left out.

The response is empty. To see the updated bill, use GET accounting/vendor-bills/:id.

Parameters

Name In Type Required Description
Api-Version header string · v1 yes The API version this request targets, named by its public identifier. Required on every request; omitting it, or naming a version this company does not have, is answered with 400. This document describes version v1.
Idempotency-Key header string no An opaque caller-chosen string (1-255 characters) that makes this request safe to retry. Repeating the same key with an identical request body replays the original response instead of re-executing - but only once that original request succeeded; a failed attempt re-executes on retry. Repeating the key with a different body is answered with 422. A key still in flight is answered with 409 - as is a key whose original request was interrupted before it finished, for a few minutes afterwards, until that attempt is presumed dead. A completed response stays replayable for 24 hours. The key is scoped to the caller, not to the action: reusing it for a different action is answered with 409 or 422 rather than treated independently. On read actions this header is ignored. On write actions that cannot offer the guarantee it is answered with 400 IDEMPOTENCY_NOT_SUPPORTED rather than silently ignored.
id path string yes The unique identifier of the vendor bill you want to update. Example: "c41d0b58-2e97-4f6a-8d13-7b5e9c204af6".

Request body

Required, application/json: updateVendorBillInput.

Field Type Required Description
billNumber string no The vendor-issued invoice number, as printed on the bill. It is not unique across vendors. Omit to leave unchanged.
billDate date no The date printed on the vendor's invoice. Use format YYYY-MM-DD. Omit to leave unchanged.
dueDate date no The date payment is due. Use format YYYY-MM-DD. Omit to leave unchanged. Example: "2026-09-15".
serviceDate date no The date the goods or services were delivered. Use format YYYY-MM-DD. Omit to leave unchanged.
currency string no The currency of the bill. Format ISO 4217, for example 'USD'. Omit to leave unchanged.
paymentTerms string no The payment-terms key, for example 'net30', 'net60' or 'dueOnReceipt'. Omit to leave unchanged.
vendorId string no The vendor the bill is from. See id on GET accounting/vendors/:id. Omit to leave unchanged.
entityId string no The legal entity the bill is posted under. See id on GET base/entities. Omit to leave unchanged.
markAsPaid boolean no Whether the bill is marked paid. Omit to leave unchanged.
origin string no The source system this record came from, as free-form text, for example 'Ramp'. Omit it and it stays unset. The server does not set a value.
createLines array<object> no Lines to add to the bill, each with the same shape as on create and no id. Omit for no additions.
createLines[].amount decimal yes The total line amount, gross, including VAT where applicable, as a decimal in the bill currency.
createLines[].description string no A description of the line item, typically copied from the vendor's invoice.
createLines[].accountId string no The GL expense account this line posts to. See id on GET accounting/accounts/:id.
createLines[].departmentId string no The department this line is charged to. See id on GET people/departments/:id.
createLines[].businessUnitId string no The business unit this line is charged to. There is no endpoint for it.
createLines[].crossChargeEntityId string no The legal entity this line is cross charged to (Charge to). See id on GET base/entities. It must differ from the bill's entity, and cross charging must be set up for both entities, or the request fails with CROSS_CHARGE_INVALID.
createLines[].customerId string no The customer this expense is rebilled to. See id on GET accounting/customers/:id. It is only meaningful alongside billableExpense.
createLines[].vatPercentage decimal no The VAT rate applied, as a percentage. 19 means 19%, not 0.19.
createLines[].vatAccountId string no The general ledger account the VAT posts to. See id on GET accounting/accounts/:id.
createLines[].reverseVatAccountId string no The general ledger account reverse-charge VAT posts to. See id on GET accounting/accounts/:id.
createLines[].vatAmount decimal no The explicit VAT amount, as a decimal in the bill currency. Omit to derive it from vatPercentage.
createLines[].valueAllocationId string no The value-allocation rule distributing this line across dimensions. There is no endpoint for it.
createLines[].purchaseOrderLineId string no The purchase-order line this line is matched against. There is no endpoint for it.
createLines[].billableExpense string no The billable-expense status for this line. Values include 'yes', 'no' and 'skipped'.
createLines[].lineType string no The kind of line. Values include 'expense' (a one-time cost) and 'prepaidExpense' (an upfront cost spread over several periods). Defaults to 'expense'.
createLines[].amortizationSchedules array<object> no The amortization schedules to defer this line over, one per accounting book. A new line has nothing to change or remove, so this is a plain array, the same shape POST accounting/vendor-bills takes.
createLines[].amortizationSchedules[].bookId string no The accounting book this schedule posts into. See id on GET accounting/books/:id. Omit it on a single-book entity to use that entity's default transaction book.
createLines[].amortizationSchedules[].deferredAccountId string no The general ledger account the deferred balance sits on until it is recognized. See id on GET accounting/accounts/:id. Defaults to the line's own accountId.
createLines[].amortizationSchedules[].recognitionAccountId string yes The general ledger account each installment recognizes the expense into. See id on GET accounting/accounts/:id.
createLines[].amortizationSchedules[].amortizationMethod string yes How the schedule spreads its total. Values include 'exactDays', 'pointInTime', 'straightLine', 'straightLineProRateFirstLast' and 'usageBased'.
createLines[].amortizationSchedules[].amortizationStartDate date yes The first day the schedule amortizes over. Format YYYY-MM-DD. It must not be after amortizationEndDate.
createLines[].amortizationSchedules[].amortizationEndDate date yes The last day the schedule amortizes over, inclusive. Format YYYY-MM-DD.
createLines[].amortizationSchedules[].term decimal yes The number of months the schedule spreads over. A count, not an amount, so it carries no currency.
createLines[].amortizationSchedules[].description string no A note to record against the schedule.
updateLines array<object> no Lines to change, each addressed by the id the bill publishes. Every field but the id is optional and left unchanged when omitted. Omit for no changes. Example: [{"id":"7a1b2c3d-4e5f-6071-8293-a4b5c6d7e8f9","amount":"1350.00"}].
updateLines[].id string yes The unique identifier for the line to change. It must belong to this bill.
updateLines[].amount decimal no The total line amount, gross, as a decimal in the bill currency. Omit to leave unchanged.
updateLines[].description string no A description of the line item. Omit to leave unchanged.
updateLines[].accountId string no The GL expense account this line posts to. See id on GET accounting/accounts/:id. Omit to leave unchanged.
updateLines[].departmentId string no The department this line is charged to. See id on GET people/departments/:id. Omit to leave unchanged.
updateLines[].businessUnitId string no The business unit this line is charged to. There is no endpoint for it. Omit to leave unchanged.
updateLines[].crossChargeEntityId string no The legal entity this line is cross charged to (Charge to). See id on GET base/entities. Omit to leave unchanged. It must differ from the bill's entity, and cross charging must be set up for both entities, or the request fails with CROSS_CHARGE_INVALID.
updateLines[].customerId string no The customer this expense is rebilled to. See id on GET accounting/customers/:id. Omit to leave unchanged.
updateLines[].vatPercentage decimal no The VAT rate applied, as a percentage. 19 means 19%, not 0.19. Omit to leave unchanged.
updateLines[].vatAccountId string no The general ledger account the VAT posts to. See id on GET accounting/accounts/:id. Omit to leave unchanged.
updateLines[].reverseVatAccountId string no The general ledger account reverse-charge VAT posts to. See id on GET accounting/accounts/:id. Omit to leave unchanged.
updateLines[].vatAmount decimal no The explicit VAT amount, as a decimal in the bill currency. Omit to leave unchanged.
updateLines[].valueAllocationId string no The value-allocation rule distributing this line across dimensions. There is no endpoint for it. Omit to leave unchanged.
updateLines[].purchaseOrderLineId string no The purchase-order line this line is matched against. There is no endpoint for it. Omit to leave unchanged.
updateLines[].billableExpense string no The billable-expense status for this line. Values include 'yes', 'no' and 'skipped'. Omit to leave unchanged.
updateLines[].lineType string no The kind of line. Values include 'expense' and 'prepaidExpense'. Omit to leave unchanged.
updateLines[].createAmortizationSchedules array<object> no Amortization schedules to add to this line, each with no id. Omit for no additions. Send none of the three amortization arrays to leave this line's schedules exactly as they are.
updateLines[].createAmortizationSchedules[].bookId string no The accounting book this schedule posts into. See id on GET accounting/books/:id. Omit it on a single-book entity to use that entity's default transaction book.
updateLines[].createAmortizationSchedules[].deferredAccountId string no The general ledger account the deferred balance sits on until it is recognized. See id on GET accounting/accounts/:id. Defaults to the accountId sent on this updateLines item. If that item doesn't send accountId, send deferredAccountId.
updateLines[].createAmortizationSchedules[].recognitionAccountId string yes The general ledger account each installment recognizes the expense into. See id on GET accounting/accounts/:id.
updateLines[].createAmortizationSchedules[].amortizationMethod string yes How the schedule spreads its total. Values include 'exactDays', 'pointInTime', 'straightLine', 'straightLineProRateFirstLast' and 'usageBased'.
updateLines[].createAmortizationSchedules[].amortizationStartDate date yes The first day the schedule amortizes over. Format YYYY-MM-DD. It must not be after amortizationEndDate.
updateLines[].createAmortizationSchedules[].amortizationEndDate date yes The last day the schedule amortizes over, inclusive. Format YYYY-MM-DD.
updateLines[].createAmortizationSchedules[].term decimal yes The number of months the schedule spreads over. A count, not an amount, so it carries no currency.
updateLines[].createAmortizationSchedules[].description string no A note to record against the schedule.
updateLines[].updateAmortizationSchedules array<object> no Amortization schedules to change, each addressed by the id the bill publishes. A schedule that has already started recognizing is refused with AMORTIZATION_SCHEDULE_POSTED. Omit for no changes.
updateLines[].updateAmortizationSchedules[].id string yes The identifier of the schedule to change. It must be one this line already carries.
updateLines[].updateAmortizationSchedules[].bookId string no The accounting book this schedule posts into. See id on GET accounting/books/:id. Omit to leave unchanged.
updateLines[].updateAmortizationSchedules[].deferredAccountId string no The general ledger account the deferred balance sits on until it is recognized. See id on GET accounting/accounts/:id. Omit to leave unchanged, unless this updateLines item also sends accountId, in which case it is set to that account.
updateLines[].updateAmortizationSchedules[].recognitionAccountId string no The general ledger account each installment recognizes the expense into. See id on GET accounting/accounts/:id. Omit to leave unchanged.
updateLines[].updateAmortizationSchedules[].amortizationMethod string no How the schedule spreads its total. Values include 'exactDays', 'pointInTime', 'straightLine', 'straightLineProRateFirstLast' and 'usageBased'. Omit to leave unchanged.
updateLines[].updateAmortizationSchedules[].amortizationStartDate date no The first day the schedule amortizes over. Format YYYY-MM-DD. Omit to leave unchanged.
updateLines[].updateAmortizationSchedules[].amortizationEndDate date no The last day the schedule amortizes over, inclusive. Format YYYY-MM-DD. Omit to leave unchanged.
updateLines[].updateAmortizationSchedules[].term decimal no The number of months the schedule spreads over. Omit to leave unchanged.
updateLines[].updateAmortizationSchedules[].description string no A note to record against the schedule. Omit to leave unchanged.
updateLines[].deleteAmortizationSchedules array<string> no The identifiers of amortization schedules to remove from this line. Each must be one this line carries, and one that has not started recognizing. Removing a schedule leaves this line's other books untouched.
deleteLines array<string> no The identifiers of lines to remove, applied before the updates and creates. Each must belong to this bill. Removing a line also removes the amortization schedules it carried. Example: ["1f2e3d4c-5b6a-7089-9a8b-7c6d5e4f3a2b"]. 
{
  "billNumber": "<billNumber>",
  "billDate": "2026-01-15",
  "dueDate": "2026-09-15",
  "serviceDate": "2026-01-15",
  "currency": "<currency>",
  "paymentTerms": "<paymentTerms>",
  "vendorId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "entityId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
  "markAsPaid": true,
  "origin": "<origin>",
  "createLines": [
    {
      "amount": "19.99",
      "description": "<description>",
      "accountId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
      "departmentId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
      "businessUnitId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
      "crossChargeEntityId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
      "customerId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
      "vatPercentage": "19.99",
      "vatAccountId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
      "reverseVatAccountId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
      "vatAmount": "19.99",
      "valueAllocationId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
      "purchaseOrderLineId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
      "billableExpense": "<billableExpense>",
      "lineType": "<lineType>",
      "amortizationSchedules": [
        {
          "bookId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
          "deferredAccountId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
          "recognitionAccountId": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
          "amortizationMethod": "<amortizationMethod>",
          "amortizationStartDate": "2026-01-15",
          "amortizationEndDate": "2026-01-15",
          "term": "19.99",
          "description": "<description>"
        }
      ]
    }
  ],
  "updateLines": [
    {
      "id": "7a1b2c3d-4e5f-6071-8293-a4b5c6d7e8f9",
      "amount": "1350.00"
    }
  ],
  "deleteLines": [
    "1f2e3d4c-5b6a-7089-9a8b-7c6d5e4f3a2b"
  ]
}

Response

200 Success

{
  "data": {},
  "diagnostics": [
    {
      "code": "<code>",
      "message": "<message>",
      "severity": "error",
      "path": [
        "<path>"
      ],
      "details": "<details>"
    }
  ]
}

Response headers

Errors

Code Status
NOT_FOUND 400
REFERENCE_NOT_FOUND 400
LINE_NOT_FOUND 400
ACCOUNT_ENTITY_MISMATCH 400
CROSS_CHARGE_INVALID 400
TOO_MANY_LINES 400
AMORTIZATION_SCHEDULE_NOT_FOUND 400
AMORTIZATION_SCHEDULE_POSTED 400
AMORTIZATION_NOT_ALLOWED_ON_LINE 400
AMORTIZATION_DATE_RANGE_INVALID 400
AMORTIZATION_BOOK_NOT_CONFIGURED 400
DUPLICATE_AMORTIZATION_BOOK 400
AMORTIZATION_TERM_MISMATCH 400
AMORTIZATION_METHOD_INVALID 400
IDEMPOTENCY_KEY_CONFLICT 409
IDEMPOTENCY_PAYLOAD_MISMATCH 422

Statuses