The 'CTX format for EFT is common but not an available file format in GP. The only field that cannot be achieved is a total of the addenda records in the DETAIL line. GP can count/sum records AFTER they are printed, but not before. If GP could total the addenda records in the DETAIL line, another file format could be achieved by that one field.

Note: The work-around is to print 'one check per invoice' and then hard-code that field to 1, however, this is not ideal if the banks charge per line for your file.