Abstract: A transaction account issuer may obtain receive an application for a transaction account which includes a department of defense identification code. The transaction account issuer may verify the DOD ID number with the DOD. The transaction account issuer may embed the DOD ID number in a transaction instrument which is issued to the consumer. The consumer may use the transaction instrument at a DOD point of sale located at a DOD facility. The DOD point of sale may verify with the DOD that the DOD ID number in the transaction instrument is valid. The DOD may notify the transaction account issuer that the DOD ID number is valid. The transaction account issuer may approve transactions which may have otherwise been denied.

Abstract: Embodiments include methods and devices for creating an electronic invoice file using a baseline electronic purchase order file. The methods and devices can receive data representing an electronic purchase order file, comprising a plurality of fields of information. The methods and devices can also confirm that the received electronic purchase order file, was received from a valid retail trading partner, the format of the received electronic purchase order file is consistent with the format of the baseline electronic purchase order file, and the fields of the received electronic purchase order file are consistent with the fields in the baseline electronic purchase order file, in a single step, by applying a hashing function to the data representing the baseline electronic purchase order file and received electronic purchase order file. The methods and devices can also create an electronic invoice file, using a plurality of fields from the electronic purchase order file.