AP Checks Cashed

For AP checks cashed, do we run transaction code FCKR. We will upload the file from the bank through this transaction code, I understand. But will it also hit teh correct account (vendor, g/l account). Or is there another transaction to do it. Or do we need to develop a program for this. If we need to develop a program, what functional specs do we give to the techical person, meaning which transaction code.

If the functional specs are required at all for this or we just run FCKR and upload it. Please clarify.

Thanks

Lakshmi