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

# Delete Customer

> Delete information about a client.

## Overview

This page documents the `DELETE /payment/open/institution/v1/pay/channelmanage/delete` endpoint. The full schema, parameters, and examples are rendered from the linked OpenAPI definition above.

Delete Client

## Notes

* Authentication uses the standard GatePay signed headers.
* This page documents the standard merchant endpoint.
* For shared signing rules, see [/api-reference/version/100/en/common/securityAndSignature](/api-reference/version/100/en/common/securityAndSignature).


## OpenAPI

````yaml /api-reference/version/100/en/openapi/institution/channel-openapi.json DELETE /payment/open/institution/v1/pay/channelmanage/delete
openapi: 3.1.0
info:
  title: GatePay API
  description: >-
    Solutions provided by Gate Pay for gateway merchants.


    Gateway merchants can maintain their own clients and distinguish
    transactions by client when using GatePay's collection and crediting
    functions.
  license:
    name: MIT
  version: 1.0.0
servers:
  - url: https://openplatform.gateapi.io
security: []
paths:
  /payment/open/institution/v1/pay/channelmanage/delete:
    delete:
      summary: Delete Client
      description: Delete information about a client.
      parameters:
        - $ref: '#/components/parameters/X-GatePay-Certificate-ClientId'
        - $ref: '#/components/parameters/X-GatePay-Signature'
        - $ref: '#/components/parameters/X-GatePay-Timestamp'
        - $ref: '#/components/parameters/X-GatePay-Nonce'
        - $ref: '#/components/parameters/X-GatePay-On-Behalf-Of'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - channelId
              properties:
                channelId:
                  type: string
                  description: Client Name
            example:
              channelId: test
      responses:
        '200':
          description: success
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ApiResponse'
              example:
                status: SUCCESS
                code: '000000'
                errorMessage: ''
components:
  parameters:
    X-GatePay-Certificate-ClientId:
      name: X-GatePay-Certificate-ClientId
      in: header
      required: true
      description: Merchant client ID, obtained from GatePay platform
      schema:
        type: string
        example: 4186d0c6-6a35-55a9-8dc6-5312769dbff8
    X-GatePay-Signature:
      name: X-GatePay-Signature
      in: header
      required: true
      description: HMAC-SHA256 signature for request validation
      schema:
        type: string
        example: >-
          672d5650dcc9bb22ebf25fa16c28d03c0e159d742a9176d4340a5da326d75dc8a2ec24c97fa6fc5d1533dd6e968863747e1d86a45e562cbe899f9ed7e9ca7f77
    X-GatePay-Timestamp:
      name: X-GatePay-Timestamp
      in: header
      required: true
      description: >-
        Timestamp in milliseconds, must not differ from server time by more than
        5 minutes
      schema:
        type: string
        example: '1672905655498'
    X-GatePay-Nonce:
      name: X-GatePay-Nonce
      in: header
      required: true
      description: Random nonce for replay attack prevention
      schema:
        type: string
        example: '9578'
    X-GatePay-On-Behalf-Of:
      name: X-GatePay-On-Behalf-Of
      in: header
      required: true
      schema:
        type: string
      description: >-
        Required delegated-subject header. Provide the initiating account ID for
        this request. For institution merchant APIs, this is typically the
        target sub-account ID; for institution charge and transfer APIs, it can
        be either an institution account ID or a sub-account ID.
  schemas:
    ApiResponse:
      type: object
      properties:
        status:
          type: string
          description: response status
        code:
          type: string
          description: response code
        errorMessage:
          type: string
          description: Error message

````