Use this endpoint to register your client’s bank details (IBAN or other formats) for outbound transfers (Money‑Out) from their Lemonway payment account.

Key points:

• Purpose: Bank details are only needed for Money‑Out transactions.

• IBAN accounts: If you’re adding an IBAN, use the dedicated IBAN registration call.

• Multiple accounts: Adding a new bank account does not disable previously registered accounts.

• Unregistering: To deactivate an existing account, use the IbanUnregisterPut endpoint.

• Single‑account option: To restrict to one bank account per payment account, contact Lemonway support.

• Additional fields: For certain country codes (or USD environments), you must also supply:

  • bankBranchRoutingCode
  • bankName
  • bankBranchAddress

Important: Whenever you see accountId in a path or body parameter, enter your wallet’s ID.