> ## Documentation Index > Fetch the complete documentation index at: https://docs.zapyd.com/llms.txt > Use this file to discover all available pages before exploring further. # Delete Bank Account > Deletes a customer's bank account. Add the Zapyd "Delete Bank Account" call (`DELETE /cms/api/v1/bank/{customer_id}/{bank_id}/delete`) to my backend. Deletes a customer's bank account. * Sandbox: `DELETE https://sandbox.zapyd.com/cms/api/v1/bank/{customer_id}/{bank_id}/delete` * Production: `DELETE https://api.zapyd.com/cms/api/v1/bank/{customer_id}/{bank_id}/delete` Path parameters: * `customer_id` (string, uuid, required): Customer's unique identifier. * `bank_id` (string, uuid, required): Bank account's unique identifier. Success: HTTP 200, `{status: true, message, data}`. `data`: `id`, `customer_id`, `country`, `bank_account_type`, `identifiers` (Rail-specific identifiers. ACCOUNT\_DETAILS: account\_number and ifsc. UPI: vpa), `bank_account_status`, `beneficiary_name` (Account holder name returned by bank verification), `bank_name`, `failure_reason` (Set when bank\_account\_status is FAILED). Errors (`{status: false, message, err_code, errors}`): * 400 `Customer not found or access denied`: Customer not found; Customer does not belong to the organization * 400 `Bank not found or access denied`: Bank not found; Bank does not belong to the Customer * 500 `Internal Server Error` Every endpoint can also return 401 `AUTH_*` (signature, timestamp or key: fix, don't retry), and 429 or 5xx (retry with backoff). Rules: * Send no body and sign `{}`. The deleted account no longer counts towards the 3-per-rail limit. Signing (every request): * Headers: `X-API-KEY`, `X-TIMESTAMP` (Unix seconds, within 300 s of server time; generate per request) and `X-SIGNATURE`. * `X-SIGNATURE` = Base64(HMAC-SHA256(key = API secret, message = apiKey + "|" + timestamp + "|" + canonicalBody)). Base64 of the raw digest, not hex. * canonicalBody: the JSON body with keys sorted at every nesting level, no whitespace (separators `,` and `:`), and every non-ASCII character escaped as lowercase `\uXXXX` (Python `json.dumps(body, sort_keys=True, separators=(",", ":"))`). Requests with no body (GET, DELETE) sign `{}`. Query parameters are not signed. * Send the exact canonicalBody string you signed as the request body, with `Content-Type: application/json`. * Test vector: key `3f1b2c4d-5e6f-4a7b-8c9d-0e1f2a3b4c5d`, secret `test-secret-do-not-use`, timestamp `1735689600`. Signing `{}` gives `6sCtVSRQjU9+2/af8gdwUAvY1l6Ii6ENcbRfanPkhY0=`. Body `{"customer_id":"78c99d71-f28f-47a9-8302-93b286efbe0e","amount":100.5,"currency":"INR","meta":{"note":"Café","b":2,"a":1}}` gives `l+DvQrzlKbsOSxSYOdWoWHEehcFRZfDJPKlLDkm2cSI=`. Deliver: 1. A typed `deleteBankAccount` function in this codebase's language and HTTP client. Reuse an existing Zapyd client and signer, or write one small shared client. 2. Config from `ZAPYD_API_KEY`, `ZAPYD_API_SECRET` and `ZAPYD_BASE_URL`. The secret stays on the server, never in a browser or app. 3. Return `data`. When `status` is false, throw an error with the HTTP status, `err_code`, `message` and `errors`. Don't show raw errors to end users. 4. Retry only 429 and 5xx: exponential backoff from 1 s, capped at 30 s, at most 5 attempts. 5. Amounts as strings. Types for every field above. 6. Tests: the signer against the test vector, and this call against sandbox. Reference: `https://docs.zapyd.com/api-reference-exchange/endpoint/bank/delete.md` | API Status Code | Response | Reason | | - | - | - | | 400 | Customer not found or access denied | Customer not found | | 400 | Customer not found or access denied | Customer does not belong to the organization | | 400 | Bank not found or access denied | Bank not found | | 400 | Bank not found or access denied | Bank does not belong to the Customer | | 500 | Internal Server Error. | Internal Server Error | ## OpenAPI ````yaml DELETE /bank/{customer_id}/{bank_id}/delete openapi: 3.1.0 info: title: Zapyd API description: API for Zapyd - Customer, Payout, and Webhook services license: name: MIT version: 1.0.0 servers: - url: https://sandbox.zapyd.com/pos/api/v1 description: Payout API Base URL variables: base_url: default: https://sandbox.zapyd.com - url: https://sandbox.zapyd.com/cms/api/v1 description: Customer API Base URL variables: base_url: default: https://sandbox.zapyd.com security: - ApiKeyAuth: [] TimestampAuth: [] SignatureAuth: [] tags: - name: Customer description: Customer related operations x-displayName: Customer x-traitTag: true - name: Payout description: Payout related operations - name: Webhooks description: Webhook related operations - name: Widget description: Hosted buy/sell widget session initialization paths: /bank/{customer_id}/{bank_id}/delete: delete: tags: - Bank description: >- Delete a customer's bank account. Sign the request with an empty body (`{}`). parameters: - name: customer_id in: path required: true description: Customer's unique identifier schema: type: string format: uuid - name: bank_id in: path required: true description: Bank account's unique identifier schema: type: string format: uuid responses: '200': description: Bank account details fetched successfully content: application/json: schema: type: object properties: status: type: boolean example: true message: type: string example: Success data: type: object properties: id: type: string description: Bank account ID example: 4e6f1b20-a73c-11ec-b909-0242ac120002 format: uuid customer_id: type: string description: Customer ID example: 550e8400-e29b-41d4-a716-446655440000 format: uuid country: type: string description: Customer country (alpha-3) example: IND bank_account_type: type: string description: Payment rail example: ACCOUNT_DETAILS enum: - ACCOUNT_DETAILS - UPI identifiers: type: object description: >- Rail-specific identifiers. ACCOUNT_DETAILS: account_number and ifsc. UPI: vpa. example: account_number: '7627389201' ifsc: SBIN0001829 bank_account_status: type: string description: Verification status example: VERIFIED enum: - PROCESSING - VERIFIED - FAILED - MANUAL_REVIEW beneficiary_name: type: string description: Account holder name returned by bank verification example: JOHN DOE bank_name: type: string description: Bank name example: State Bank of India failure_reason: type: - string - 'null' description: Set when bank_account_status is FAILED example: null '400': description: Bad Request content: application/json: schema: type: object properties: status: type: boolean example: false message: type: string example: Bad Request err_code: type: string example: REQ_FIELD_MISSING errors: type: object properties: bank_id: type: array items: type: string bank_id: - This field is required. data: type: 'null' '500': description: Internal Server Error content: application/json: schema: type: object properties: status: type: boolean example: false message: type: string example: Internal Server Error data: type: 'null' err_code: type: string example: SYS_INTERNAL_ERROR errors: type: string example: Unexpected error occurred. Please try again later. servers: - url: https://sandbox.zapyd.com/cms/api/v1 description: Bank API Base URL components: securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-API-KEY description: API Key for authentication TimestampAuth: type: apiKey in: header name: X-TIMESTAMP description: Current timestamp in seconds since epoch SignatureAuth: type: apiKey in: header name: X-SIGNATURE description: HMAC SHA256 signature of the request encoded in Base64 ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.