NOTE; DESIGNATED PAYMENT CODE (DPC) (DESG-PYMT-CD) use is mandatory with input of TCs 640, 670, 680, 690, 694, and 700. DPC 01 and 02 may only be input when MFT is 01, 03, 09, 11, 12, 16, or 55. If these TCs are input, a DPC must also be input as follows:For TC 640, must be 00, 01, 02, 12, or 99.For TC 670, must be 00 thru 11, or 99.For TC 700, must be 00 or 06.See IRM 2.4.17-5 for further explanation.Below are examples of Response and Input Format displays for DRT24:Examples: ADD24 00-1673663 MFT>02 TX-PRD>202412 NM-CTRL>TERRResponse: is a snapshot of the DRT24 response display.Input Format: is a snapshot of the DRT24 display.Whenever credits are transferred by the Rejects functions, the use of IAT is mandatory. IAT eliminates the need to hold cases by detecting potential unpostable conditions. See the IAT Credit Transfer Job Aid for specific instructions. Note: IDRS will be used when IAT is unavailable.