BTA cards do not have authorization for Travel Agent transactions which are NonUATP, Service Fee, and Low Cost Carrier. Travel Agent must submit their transactions in BTA charge file not through POS. This gives TMCs the control over Authorization/Approval code number. Each Travel Agent prefers own Authorization/Approval Code as a unique transaction identifier in AMEX Settlement Report. There three ways to map desired Auth Code and all require IT intervention.

Counting pattern Code. (Not preferred).

Ticket’s last 6 digits. (Preferred and TMC preference).

Can be done by mapping Auth Code in TAB record (position 55 to 60) with Ticket number details in TAA record (position 39 to 44).

Invoice last 6 digits. (Preferred and TMC preference).

Can be done by mapping Auth Code in TAB record (position 55 to 60) with Invoice/Cr Note number details in TAB record (position 74 to 79).

Use following piece of file specifications in order to implement the mapping.

CHARGE FILE FORMAT

Transaction Advice Basic (TAB) – mandatory

Position	Length	Field Name	Format	Mandatory	Comments
55 to 60	6	AEME Approval Code	PIC X (6)	Yes	The code AEME issues to authorize a transaction (if, for example, the
floor limit has been exceeded). 6 digits unique number should be filled if transaction is under floor limit.
71 to 79	9	Invoice/Credit Note number	PIC X (9)	Yes	For refunds this should be the Credit Note Number. Alpha/Numeric
only. No other characters allowed. Must be 9 digits long, if
necessary add leading zeros (right justified).

Transaction Advice Addendum (TAA) – mandatory

Position	Length	Field Name	Format	Mandatory	Comments
29 to 48	20	Carrier/Supplier Name	PIC X (20)	Yes	Air – Carrier code and ticket number. Primary ticket number, Conjunction ticket number on Conjunction tickets. Format: 2 character carrier code. i.e. BA, 1 filler, 14 character ticket number, 3 character filler. Including check digit, if unable to supply check digit, put zero at the end of the ticket no. Transaction Fee – should state ‘Air – Carrier code and ticket number. Primary ticket number’.