Invoice proposal error - Main Account

Facing issue while posting invoice proposal. dimenisons are given in projects level, But it is showing main account issue

As per accounting structure definition, division is mandatory but not able to resolve following issue

“The combination was not validated beyond the division financial dimension”

"dimension values were validated with the account structure: Corp

Warning : account number for transaciton type customer balance does not exist.

I would check the AP and Project posting profile again and make sure those accounts are included in COA structure.