FI document posting through ALE/Idoc - FIDCC1/FIDCCP01

Hi all,

Currently I am working on a requirement ALE/IDOC:

I am at the receiving R/3 system(v4.5B). Now, I am able

to receive the message FIDCCP01 with extension for the

withholding tax. To process and post this FI document, could someone

tell me what are all the steps that I have to follow,

the function module I have to use and the user exits I

have to look at.

Many thanks in advance.