> ## Documentation Index > Fetch the complete documentation index at: https://docs.tesouro.com/llms.txt > Use this file to discover all available pages before exploring further. # Update an entity's bank account > Change the specified fields with the provided values. ## OpenAPI ````yaml /.tooling/schemas/rest/tags/product-finops.json patch /finops/v1/bank-details/{bank_account_id} openapi: 3.1.0 info: title: Tesouro Partner API version: '2025-06-23' description: The Tesouro REST API, for Tesouro partners to integrate with our solution. termsOfService: https://tesouro.com/terms contact: name: Tesouro team url: https://tesouro.com/about/ email: developers@tesouro.com servers: - url: https://api.sandbox.tesouro.com description: Sandbox security: [] tags: - name: Accounting connections - name: Accounting data pull - name: Accounting synchronized records - name: Accounting tax rates - name: Analytics - name: Approval policies - name: Approval requests - name: Bank details - name: Comments - name: Cost centers - name: Counterpart VAT IDs - name: Counterpart addresses - name: Counterpart bank accounts - name: Counterpart contacts - name: Counterparts - name: Credit notes - name: Custom tax rates - name: Delivery notes - name: Documents - name: Entities - name: Entity users - name: Events - name: Files - name: Identity - name: Ledger accounts - name: Mail templates - name: Mailbox domains - name: Mailboxes - name: Measure units - name: OCR - name: Overdue reminders - name: PDF templates - name: Payable line items - name: Payables - name: Payment intents - name: Payment links - name: Payment methods - name: Payment records - name: Payment reminders - name: Payment terms - name: Products - name: Projects - name: Purchase orders - name: Receipts - name: Receivables - name: Recurrences - name: Tags - name: Text templates - name: Transactions - name: VAT rates - name: Webhook deliveries - name: Webhook subscriptions paths: /finops/v1/bank-details/{bank_account_id}: patch: tags: - Bank details summary: Update an entity's bank account description: Change the specified fields with the provided values. operationId: patch_bank-details_id parameters: - required: true schema: type: string format: date example: '2025-06-23' name: x-finops-version in: header - required: true schema: type: string format: uuid name: bank_account_id in: path - description: The ID of the entity that owns the requested resource. required: true schema: type: string format: uuid examples: - 9d2b4c8f-2087-4738-ba91-7359683c49a4 name: x-organization-id in: header requestBody: content: application/json: schema: $ref: '#/components/schemas/UpdateEntityBankAccountRequest' required: true responses: '200': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/EntityBankAccountResponse' '404': description: Not found content: application/json: schema: $ref: '#/components/schemas/ErrorSchemaResponse' '405': description: Method Not Allowed content: application/json: schema: $ref: '#/components/schemas/ErrorSchemaResponse' '409': description: Business logic error content: application/json: schema: $ref: '#/components/schemas/ErrorSchemaResponse' '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' '500': description: Internal Server Error content: application/json: schema: $ref: '#/components/schemas/ErrorSchemaResponse' security: - HTTPBearer: [] components: schemas: UpdateEntityBankAccountRequest: properties: account_holder_name: type: string maxLength: 200 minLength: 1 description: >- The name of the person or business that owns this bank account. If the account currency is GBP or USD, the holder name cannot be changed to an empty string. example: Cayla Lloyd display_name: type: string maxLength: 200 minLength: 1 description: >- User-defined name of this bank account, such as 'Primary account' or 'Savings account'. example: Primary account additionalProperties: false type: object description: Data that can be updated in existing bank accounts of an entity. EntityBankAccountResponse: properties: id: type: string format: uuid description: Unique ID of the bank account. account_holder_name: type: string description: >- The name of the person or business that owns this bank account. Required in the following cases: * the account currency is GBP or USD, * the account currency is EUR and the entity wishes to receive SEPA Credit transfers to this account. example: Cayla Lloyd account_number: type: string description: >- The bank account number. Required if the account currency is GBP or USD. UK account numbers typically contain 8 digits. US bank account numbers contain 9 to 12 digits. example: '123456789' account_number_last4: type: string description: >- The last 4 digits of bank account number. Required if the account currency is GBP or USD and there is no information about the full account number. example: '5678' bank_name: type: string description: The bank name. example: Chase display_name: type: string description: >- User-defined name of this bank account, such as 'Primary account' or 'Savings account'. example: Primary account routing_number: type: string description: >- The bank's routing transit number (RTN) or branch code. Required if the account currency is USD. US routing numbers consist of 9 digits. example: '123456789' was_created_by_user_id: type: string format: uuid description: >- ID of the entity user who added this bank account, or `null` if it was added using a partner access token. type: object required: - id description: Represents a US bank account (bank details) owned by an entity. ErrorSchemaResponse: properties: error: $ref: '#/components/schemas/ErrorSchema' type: object required: - error HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array type: object ErrorSchema: properties: message: type: string type: object required: - message ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array msg: type: string type: type: string type: object required: - loc - msg - type securitySchemes: HTTPBearer: type: http scheme: bearer ````