Customer Invoice with error "ORA-20105: Invoice.ACCERROR1: Error (You can not specify project activity without project (codepart H)) occurred while booking Invoice"

Hello Everyone,

I have a customer invoice that i can’t process and transfer to GL.

“ORA-20105: Invoice.ACCERROR1: Error (You can not specify project activity without project (codepart H)) occurred while booking Invoice”

I don’t understand the error because all field he want’s is fielled in (look at the screenshoot), the project and the activity or seq activity in the order. 

i have tried to set “Can” all code part demands for all account using in the posting and delete all mandatory pre-posting for M28 and M104 but it’s don’t work, i have always have this error.

So can anyone help me to solve this or tell me is it a case for IFS.

Thank you so much fo your help.