ACH Transaction Code documents associate a code and a text description with each of the ACH transaction types possible in the PDP. The codes are defined programmatically. By default, only two codes are defined, and they distinguish between deposits to checking accounts and deposits to savings accounts.
The two standard, programmatically defined ACH values are 22 for checking and 32 for savings. Because these values are hard-coded, users may modify only the associated descriptions. Adding or modifying the code values requires programming changes.