> ## Documentation Index > Fetch the complete documentation index at: https://docs.ach.netevia.com/llms.txt > Use this file to discover all available pages before exploring further. # Update Business KYB ( SUNSETTING ) > **This Endpoint is Sunsetting and you should use the stable endpoint. Sunsetting APIs that are still supported but scheduled for deprecation.** ## OpenAPI ````yaml https://api.grailpay.com/docs?api-docs.json post /3p/api/v2/users/{uuid}/kyb openapi: 3.0.0 info: title: GrailPay ACH API description: API Documentation for moving funds via ACH using the GrailPay ACH API version: 2025.12.19.2 servers: - url: https://api.grailpay.com description: Production environment - url: https://api-sandbox.grailpay.com description: Sandbox environment security: [] tags: - name: Users description: >- API Endpoints used for the onboarding and managing People, Businesses, and Merchants. - name: Transactions description: API Endpoints used for creating and managing transactions. - name: Payouts description: API Endpoints used for fetching payout information. - name: Refunds description: API Endpoints used for creating and retrieving refunds. - name: Bank Accounts description: API Endpoints used for adding and managing bank accounts. - name: Webhooks description: API Endpoints used for registering and de-registering webhooks. - name: Billing description: API Endpoints used for retrieving billing information. - name: Stable description: Stable, up-to-date APIs that are recommended for current integration. - name: Sunsetting description: Sunsetting APIs that are still supported but scheduled for deprecation. - name: Deprecated description: Deprecated APIs that are no longer supported and should be removed. - name: SUNSETTING description: SUNSETTING paths: /3p/api/v2/users/{uuid}/kyb: post: tags: - Users - Sunsetting summary: Update Business KYB ( SUNSETTING ) description: >- **This Endpoint is Sunsetting and you should use the stable endpoint. Sunsetting APIs that are still supported but scheduled for deprecation.** operationId: 7acac74adaf5357356a4a694430fe2f2 parameters: - $ref: '#/components/parameters/UserUuidPathParam' requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/UpdateBusinessKybRequest' responses: '200': description: Business Successfully updated content: application/json: schema: properties: status: type: boolean example: true message: type: string example: The business KYB has been updated. data: type: string example: null errors: type: string example: null error_code: type: string example: null type: object '401': description: Unauthorized content: application/json: schema: properties: status: type: boolean example: false message: type: string example: Invalid token. data: type: string example: null errors: type: string example: null error_code: type: string example: null type: object '403': description: Forbidden content: application/json: schema: properties: status: type: boolean example: false message: type: string example: Only business users are allowed to update KYB. data: type: string example: null errors: type: string example: null error_code: type: string example: null type: object '404': description: User not found content: application/json: schema: properties: status: type: boolean example: false message: type: string example: User not found. data: type: string example: null errors: type: string example: null error_code: type: string example: null type: object '406': description: Error content: application/json: schema: properties: status: type: boolean example: false message: type: string example: The requested billing merchant user uuid does not exist. data: type: string example: null errors: type: string example: null error_code: type: string example: null type: object '422': description: Validation Error content: application/json: schema: properties: status: type: boolean example: false message: type: string example: The given data was invalid. data: type: string example: null errors: properties: first_name: type: array items: type: string example: The tin is required. type: object error_code: type: string example: null type: object security: - ApiToken: [] components: parameters: UserUuidPathParam: name: uuid in: path description: UUID of the user required: true schema: type: string format: uuid schemas: UpdateBusinessKybRequest: required: - first_name - last_name - email - phone - business - address properties: first_name: type: string example: John last_name: type: string example: Doe email: type: string example: '' phone: type: string example: '' business: required: - name - tin properties: name: type: string example: Business Name tin: type: string example: '123456789' trading_name: type: string example: Business Trading Name entity_type: type: string example: '' incorporation_date: type: string example: '2021-01-01' incorporation_state: type: string example: CO industry: type: string example: '' industry_classification: properties: code_type: type: string example: '' codes: type: array items: type: string description: type: string example: '' type: object source_of_wealth: type: string example: '' source_of_funds: type: string example: '' first_transaction_completed_at: type: string example: '2021-01-01 00:00:00' product_type: type: string example: '' registered_as_inactive: type: boolean example: false address_type: type: string example: '' address: required: - line_1 - city - state - zip properties: line_1: type: string example: 123 Main St line_2: type: string example: Apt 1 city: type: string example: Denver state: type: string example: CO zip: type: string example: '80202' type: object type: object billing_merchant_user_uuid: type: string example: 123e4567-e89b-12d3-a456-426614174000 billing_processor_mid: type: string example: '1234567890' type: object securitySchemes: ApiToken: type: http description: >- Token-based authentication using Authorization: Bearer provided by the GrailPay Support Team. bearerFormat: Token scheme: bearer ````