> ## Documentation Index
> Fetch the complete documentation index at: https://agenticbanking.backbase.io/llms.txt
> Use this file to discover all available pages before exploring further.

# 2026.09

> Grand Central Unified APIs release notes, version 2026.09.

## Features

The following feature updates are available in 2026.09 for Grand Central Unified APIs:

<div className="release-notes">
  | Product group     | Software component                   | Version | Title                                                          | Description                                                                                                                                                                                                                                                                                                                                                                                                         |
  | ----------------- | ------------------------------------ | ------- | -------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
  | Deposit           | `grandcentral-deposit-api`           | 1.4.0   | Extended deposit API schemas with custom fields                | The deposit API adds optional `customFields` on operation-root and nested objects, including balances, interest, overdraft, term deposit, fee arrangements, account parties, person name, and product. Use `customFields` for vendor-specific extensions on create, get, and related deposit operations.                                                                                                            |
  | Party Reference   | `grandcentral-party-reference-api`   | 2.6.0   | Extended party reference schemas with additional custom fields | The party reference API adds optional `customFields` on further party and account objects, including legal structure, email, phone, postal addresses, demographics, occupation, education, account party, account identification, nested deposit and loan arrangements, and product on `GET` party accounts.                                                                                                        |
  | Servicing Consent | `grandcentral-servicing-consent-api` | 1.6.0   | Extended servicing consent address fields to ISO 20022         | The servicing consent API maps the shared address object to ISO 20022 postal-address fields used by payment order, including `addressType` values such as `BIZZ`, `MLTO`, and `STAT`, `addressLines` as an array, `townLocationName`, `districtName`, and `postalCode` in place of `postCode`. If you still send the previous address field names on PIS create-consent responses, review the v1.6.0 specification. |
  | Position Keeping  | `grandcentral-position-keeping-api`  | 0.3.0   | Extended transaction enrichment acknowledgement to HTTP 202    | `POST /internal/transactions/enrichment` returns HTTP `202` Accepted with an empty JSON object instead of HTTP `200` with no body. The request body is unchanged. Clients that treated HTTP `200` as the success acknowledgement need to accept `202`.                                                                                                                                                              |
</div>