FAMIS uses the concept of transaction codes (or T-codes) to classify accounting transactions and determine how to post an individual transaction to the General Ledger and Subsidiary Ledger accounts.
In FAMIS, transaction codes are three-character codes. In most cases, the first two characters are significant, impacting the posting to the ledgers, and the third character is most often used solely for documentation.
Related Documentation
FAMIS Transaction Codes
Core Concept: General Ledger (GL) Accounts
Core Concept: Subsidiary Ledger (SL) Accounts