Problems during Invoicing without PO

Hello all,

We are implementing Invoicing without PO (direct to contract) in SRM 7 with ECC Ehp5, with the functionality Central Contract Management.

Right now we are facing some problems regarding invoices creation in SRM.

We are able to create the central contract in SRM, but when trying to create invoice we have some errors, namely:

Line 1: Company * not provided

Line 1: Enter an account assignment category

Line 1: Error in account assignment for item 1

During invoice creation the contract field, at item level, should be mandatory, right?

Your help will be really apreciated.

Thanks in advance