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# Documentation changes for September 18, 2026

As part of an ongoing effort to better align the documentation with the API, we've corrected several response schemas. These changes affect the documentation only; the API was already returning this data.

## Corrected nullable fields on vendor responses

Several `VendorQueryRecord` fields can return `null` and are now documented as nullable — including `Address1`, `Address2`, `City`, `State`, `Zip`, `Country`, `Contacts`, `BillingData`, `PaymentMethod`, `EnrollmentStatus`, `Summary`, the `remit*` and `payee*` fields, and the enrichment fields (`CardAccepted`, `AchAccepted`, `CheckAccepted`, `EnrichedBy`, `EnrichedAt`, `EnrichmentId`). The response's always-present fields are now marked required. This affects:

* [Get vendor](/developers/api-reference/vendor/get-vendor)
* [List vendors by paypoint](/developers/api-reference/vendor/get-list-of-vendors-for-entrypoint)
* [List vendors by organization](/developers/api-reference/vendor/get-list-of-vendors-for-organization)

## Corrected `additionalData` type on bill, vendor, payout, and user responses

The `AdditionalData` field was documented as a string on several response fields, but the API returns an object. This affects the following endpoints:

* [Get bill](/developers/api-reference/bill/get-bill) — `AdditionalData`
* [Get vCard](/developers/api-reference/cards/get-vcard) — `associatedVendor.additionalData`
* [List payouts by paypoint](/developers/api-reference/query/get-list-of-payouts-for-entrypoint) and [by organization](/developers/api-reference/query/get-list-of-payouts-for-organization) — `Bills[].AdditionalData`
* [List payout subscriptions by paypoint](/developers/api-reference/payout-subscription/list-payout-subscriptions-for-entrypoint) and [by organization](/developers/api-reference/payout-subscription/list-payout-subscriptions-for-organization) — `BillData[].AdditionalData`
* [List users by paypoint](/developers/api-reference/user/get-list-of-users-for-paypoint) and [by organization](/developers/api-reference/user/get-list-of-users-for-an-org) — `AdditionalData`

The `AdditionalData` field was also changed from a string to an object for the following endpoints' request bodies:

* [Add bill](/developers/api-reference/bill/add-bill)
* [Update bill](/developers/api-reference/bill/update-bill)
* [Create payout subscription](/developers/api-reference/payout-subscription/create-payout-subscription) request bodies.

## Corrected `BillDate`/`DueDate` format on bill responses

`BillDate` and `DueDate` were documented as a date (`YYYY-MM-DD`), but the API always returns a full timestamp.
We changed the documentation to reflect this.
This affects the following endpoints:

* [Get bill](/developers/api-reference/bill/get-bill)
* [List bills by paypoint](/developers/api-reference/bill/get-list-of-bills-for-entrypoint) and [by organization](/developers/api-reference/bill/get-list-of-bills-for-organization)