Rejection Code Reason: "No Active Customer/Site"

We have the following error during our period end close.  No Active Customer/Site.  But when I look at the client set up etc., all looks fine.  All sites are active.         

 

This is what we get for an error:

Project Num/Task Num              Revenue(Credited)             Customer                  Agreement       Rejection Reason                

                                                                                                                         

------------------------------------------------------------------------------------------------------------------------------------                        

115640891                                     290( 273)                              Kasian A (10601)      115640891        No Active Customer/Site         

 

 

I looked in Oracle support but could not fine one item that describes this issue...Any help would be appreciated.

 Thank you,

Antonella