Overview

Update a vendor's payout detail (bank account information). All fields are optional.

Example: Update a vendor's bank account holder name or switch from checking to savings.

Important Behaviors

• Routing number validation: If provided, must be exactly 9 digits and pass ABA checksum validation.
• Masked in responses: Routing and account numbers are always masked in responses (last 4 digits only).
• Audit logged: All changes are recorded in the audit log.
• Webhook: Triggers the vendor_payout_detail.updated webhook event.