BAU Beginning Segment for the Debit Authorization

Mandatory
AtMax 1

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)

Elements

PositionElementNameTypeMin/MaxRepeat
1
127
Reference IdentificationMandatoryAlphanumeric1/30Exact 1
2
591
Payment Method CodeMandatoryID3/3Exact 1
3
506
(DFI) ID Number QualifierMandatoryID2/2Exact 1
4
507
(DFI) Identification NumberMandatoryAlphanumeric3/12Exact 1
5
508
Account NumberMandatoryAlphanumeric1/35Exact 1
6
93
NameOptAlphanumeric1/60Exact 1

Element Details

ID127
NameReference Identification
LengthMin 1 / Max 30
Position1
RequirementMandatory