Reason codes with automatic charge-off are not permitted here

Hi Experts

1. My Client uploaded the balances at the time of Go-Live, Now Client is getting Incoming Payment from Customer but there is no open item. Now I have created Reason Code and one GL A/c: Recpts earlier to Go-Live (Income) then I am trying to post this document to system then system is showing error message "Reason codes with automatic charge-off are not permitted here". How to handle this problem?

Thanks

Chandra