# bank-account-number ###### Bank account number - deprecated ➡ Request Parameter ## `` | Type | Condition | Restriction | | --- | --- | --- | | xs:string | deprecated (old: Mandatory if [`iban`](/docs/developer/api_integration/payment_1.8/payment_api_documentation/api_explorer/content/customer/bank-account/iban) or [`reference`](/docs/developer/api_integration/payment_1.8/payment_api_documentation/api_explorer/content/customer/bank-account/reference) is not present | Length <=10Pattern: see XSD |