Hi Ahmad,
This is completely CO Issue after seeing the screenshot
Please evaluate the below
1. Please check with CO Team if any user customization is done.
2. check the material data which is flowing to the billing is available in t-code KES1, If that data is not available then you need to maintain the data. (CO related activity)
3. If you have used a wrong valuation class in the material then try to correct it and try posting it again.
Regards
Raghu