BAU Beginning Segment for the Debit Authorization
To identify the beginning of the Debit Authorization Transaction Set; the BAU segment is used to identify the financial institution and account of the payer (i.e., the party authorizing the debit against its account)
Reference information as defined for a particular Transaction Set or as specified by the Reference Identification Qualifier
BAU01 is assigned by the account holder's application and relevant as an application trace number.
Code identifying the method for the movement of payment instructions
Code identifying the type of identification number of Depository Financial Institution (DFI)
Depository Financial Institution (DFI) identification number
Account number assigned
BAU06 identifies the party holding the account being debited. If used, it further serves to identify the account holder to the financial institution.