BankAccountInput

account_number
Type: string
required

Account number. Never stored or echoed back — only a non-reversible reference, the last 4 digits and the bank name.
routing_number
Type: string
required

ABA routing number (9 digits, checksum enforced).
legal_name
Type: string
max length:
200

Legal name on the account, when it differs from name. Used for the ownership match.