Use TFM Tool to lookup transaction codes based on debit and credit accounts. This tool uses the four digit SGLs rather than six digit SGLs. Accounts ending in 00 should be spoken number by number for better accuracy from Alexa (e.g. 5100 would be five one zero zero). The transaction codes in the tool are from http://tfm.fiscal.treasury.gov/v1/supplements/ussgl.html, in the transaction code pdf file, and will be updated periodically to provide the most recent version of the transaction codes.