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

# Update Fixed Limit for Card Accounts

> This endpoint updates assigned child limits. Existing fixed-limit collateral checks remain unchanged. Program-limit child updates skip collateral checks and never modify the parent facility limit. Mixed batches are rejected before any change.

The request body should contain either a single object or an array of objects, where each object represents a card account with its associated fixed limit.

- For a single card account:
  ```
  {
    "cardAccountId": "string",
    "limit": number
  }
  ```

- For multiple card accounts:
  ```
  [
    {
      "cardAccountId": "string",
      "limit": number
    },
    ...
  ]
  ```

The response will indicate whether the fixed limit was updated successfully or if there was an error.




## OpenAPI

````yaml POST /cardaccounts/fixed-limit
openapi: 3.1.0
info:
  title: API Reference
  version: '1.0'
servers:
  - url: https://access.utgl.io/v1
  - url: https://sandbox.access.utgl.io/v1
security:
  - Basic: []
  - Bearer: []
tags:
  - name: Accounts
  - name: Transactions
  - name: Card Accounts
  - name: Card Products
  - name: Cards
  - name: Digital Custody
  - name: Fee
  - name: Payout
paths:
  /cardaccounts/fixed-limit:
    post:
      tags:
        - Card Accounts
      summary: Update fixed limit for card accounts
      description: >
        This endpoint updates assigned child limits. Existing fixed-limit
        collateral checks remain unchanged. Program-limit child updates skip
        collateral checks and never modify the parent facility limit. Mixed
        batches are rejected before any change.


        The request body should contain either a single object or an array of
        objects, where each object represents a card account with its associated
        fixed limit.


        - For a single card account:
          ```
          {
            "cardAccountId": "string",
            "limit": number
          }
          ```

        - For multiple card accounts:
          ```
          [
            {
              "cardAccountId": "string",
              "limit": number
            },
            ...
          ]
          ```

        The response will indicate whether the fixed limit was updated
        successfully or if there was an error.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              oneOf:
                - type: object
                  required:
                    - cardAccountId
                    - limit
                  properties:
                    cardAccountId:
                      type: string
                      description: The unique identifier of the card account.
                    limit:
                      type: number
                      description: The new fixed limit to be set for the card account.
                - type: array
                  items:
                    type: object
                    required:
                      - cardAccountId
                      - limit
                    properties:
                      cardAccountId:
                        type: string
                        description: The unique identifier of a card account in the array.
                      limit:
                        type: number
                        description: >-
                          The new fixed limit to be set for the card account in
                          the array.
      responses:
        '200':
          description: Fixed limit updated successfully
        '400':
          description: Invalid request or program prerequisite gate.
          content:
            application/json:
              schema:
                anyOf:
                  - $ref: '#/components/schemas/ErrorCardProgram'
                  - type: object
                    description: >-
                      Existing non-program validation and account errors remain
                      unchanged.
                    properties:
                      code:
                        type: string
                      message:
                        type: string
components:
  schemas:
    ErrorCardProgram:
      type: object
      required:
        - code
        - message
      properties:
        code:
          type: string
          enum:
            - PROGRAM_LIMIT_NOT_AVAILABLE
            - PROGRAM_ASSIGNMENT_NOT_FOUND
            - PROGRAM_ASSIGNMENT_AMBIGUOUS
            - PROGRAM_ASSIGNMENT_INVALID
        message:
          type: string
          description: >-
            Safe partner-facing error without another child's identity or
            utilization details.
  securitySchemes:
    Basic:
      type: http
      scheme: basic
    Bearer:
      type: http
      scheme: bearer
      bearerFormat: JWT

````

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