SD to FICA Integration Payment

Hi Experts,

In my project there is scenario of SD to FICA Integration.

I've done all the config to Integrate SD to FICA. but when i do payment for those Business Partner Open items in FICA using Cash Desk or Payment Lot. its going in Payment on Account, when i do Account maintenance using FP06, System is complaining about GL Account in the company code 1000 does not exist or is marked for deletion. attached is the screenshot

I've check all the possibility but not succeeding, i don't understand which GL account system is Complaining about.

Your Advice and Suggestions is Highly Appreciated.

Thanks in Advance.

Rehan.Mohammed