sender cost is incomplete and Document balance cannot be distributed when settlement is reversed in CJ88

Dear All

I am facing an issue while settling the project cost settlement to AUC in the capital project.

When i do the Test Run in CJ88, it shows a message in Green Color "Sender Cost is Incomplete", If i ignore the same and do the actual settlement then the cost is getting settled but on a contrary it cannot be reveresed and at that time it shows a error message as "Document balance cannot be distributed when settlement is reversed"

Currently we are working in ECC6 at EHP 6 level

Do let me know if we are missing any configuration

Thanks and Regards