Once a customer has completed the KYC requirements in the contextual country, the next step is to attach a payment method.

To add the customer's FIAT bank account, simply call the Create Payment Method endpoint.

To view a list of the required fields to add a payment method, use the List Payment Methods Requirements endpoint.

Best Practices

Always ensure the customer has completed KYC/KYB verification before adding a payment method.

Use the List Payment Method Requirements endpoint to dynamically retrieve required fields by country.

Validate bank account formats before submitting requests to reduce errors.

Store payment method identifiers securely, as they will be required when initiating transactions.

Mexico

In the case of Alias being used for account type:

Field	Description	Rules
Alias	Unique identifier for the virtual account.	Allowed characters in account number: letters (a–z, A–Z), numbers (0–9), hyphen (-), and dot (.) Length: 6 to 20 characters Must be unique across the system

⚠️ Note: The alias can only be modified once every 24 hours.

Field	Value	Description
CustomerID	String	UUID
type	BANK_CN	Account type (BANK_CN)
fiatAccountFields	Object	Bank account details
accountNumber	String	Account number
accountType	String	Account Type
bankStreet	String	Bank Address
bankCity	String	Bank City
bankState	String	Bank State
bankPostalCode	String	Postal Code
networkIdentifier	String	SWIFT Code or Bank identifier
accountName	String	Account Name (Bank holding the account)