Update bill

PUT/api/v1/bills/{bill_id}

Update an existing bill. Optionally include 'recurring' config to create a recurring template.

Operation ID: update_bill·View as markdown·OpenAPI slice

Authentication

Bearer token authentication. Pass your DayZero API token in the Authorization header and the target business UUID in x-business-id.

Parameters

Path

bill_idstringrequired

Request body

Schema: BillUpdateRequest

statusinteger
descriptionstring
bill_numberstring
vendor_idstring
payment_term_idstring: Change (or, when set to null, clear) the payment term recorded on this bill. It does not move due_on; send that separately.
typestring
expected_amountinteger
expected_paid_on_datestring · date-time | string · date | string
amountinteger
due_onstring · date-time | string · date | string
received_onstring · date-time | string · date | string
s3_keystring
source_inventory_order_idstring
payment_methodstring: Payment method override: 'Wire Transfer', 'ACH', 'Check', 'Credit Card', or empty string to clear. Takes precedence over the method inferred from a linked payment transaction.
recurringRecurringConfig: If provided, creates a recurring template from this bill.

Responses

200Successful Response

Schema: SuccessEnvelope_BillResponse_

successboolean
messagestring
codestring
dataBillResponse

400Bad Request - Invalid input

Schema: ErrorResponse

errorstringrequired: Error category: validation_error, unauthorized, forbidden, not_found, conflict, rate_limited, server_error, or service_unavailable.
messagestringrequired: Human-readable explanation, safe to show to end users.
codestringrequired: Stable machine-readable code in CATEGORY_NNN form (e.g. NOT_FOUND_006, AUTH_010, GEN_002).
request_idstring: Correlation id for support requests. Echoes the x-request-id request header when one was supplied.
errorsobject: Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

401Unauthorized - Missing or expired token, an MCP OAuth token used against the REST API, or no access to this business

Schema: ErrorResponse

errorstringrequired: Error category: validation_error, unauthorized, forbidden, not_found, conflict, rate_limited, server_error, or service_unavailable.
messagestringrequired: Human-readable explanation, safe to show to end users.
codestringrequired: Stable machine-readable code in CATEGORY_NNN form (e.g. NOT_FOUND_006, AUTH_010, GEN_002).
request_idstring: Correlation id for support requests. Echoes the x-request-id request header when one was supplied.
errorsobject: Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

403Forbidden - Insufficient permissions

Schema: ErrorResponse

errorstringrequired: Error category: validation_error, unauthorized, forbidden, not_found, conflict, rate_limited, server_error, or service_unavailable.
messagestringrequired: Human-readable explanation, safe to show to end users.
codestringrequired: Stable machine-readable code in CATEGORY_NNN form (e.g. NOT_FOUND_006, AUTH_010, GEN_002).
request_idstring: Correlation id for support requests. Echoes the x-request-id request header when one was supplied.
errorsobject: Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

404Not Found - Resource does not exist

Schema: ErrorResponse

errorstringrequired: Error category: validation_error, unauthorized, forbidden, not_found, conflict, rate_limited, server_error, or service_unavailable.
messagestringrequired: Human-readable explanation, safe to show to end users.
codestringrequired: Stable machine-readable code in CATEGORY_NNN form (e.g. NOT_FOUND_006, AUTH_010, GEN_002).
request_idstring: Correlation id for support requests. Echoes the x-request-id request header when one was supplied.
errorsobject: Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

422Validation Error

Schema: ErrorResponse

errorstringrequired: Error category: validation_error, unauthorized, forbidden, not_found, conflict, rate_limited, server_error, or service_unavailable.
messagestringrequired: Human-readable explanation, safe to show to end users.
codestringrequired: Stable machine-readable code in CATEGORY_NNN form (e.g. NOT_FOUND_006, AUTH_010, GEN_002).
request_idstring: Correlation id for support requests. Echoes the x-request-id request header when one was supplied.
errorsobject: Field-level validation messages keyed by field name. Present on 400/422 validation failures only.

Code samples

PUT/api/v1/bills/{bill_id}

bash

curl -X PUT 'https://api.ondayzero.com/api/v1/bills/{bill_id}' \
  -H 'Authorization: Bearer dz_your_token' \
  -H 'x-business-id: YOUR_BUSINESS_ID' \
  -H 'Content-Type: application/json' \
  -d '{
  "amount": 250000,
  "description": "Office rent - March",
  "due_on": "2026-03-01",
  "payment_method": "ACH"
}'