POSTING_INTERFACE_CLEARING - FS 263 error due to cash discount

Hello FSCM Experts ,

Need your assistance with an issue , Error : FS 263, Difference is tool large for clearing occurring while using the FM : POSTING_INTERFACE_CLEARING . I debugged the code and found that the cash discount of the document  ( type : RV ) is being compared against T043G table ( field : Revenue ) and found to be more . Hence throwing the error message.

But , Interesting point is document is past dated and the discount i snot applicable as seen from the corresponding payment term conditions.

Please help.

thanks

Raghu