GB invoice 6490000056 cannot be accounted

GB invoice 6490000056 cannot be accounted. Error Message:There is no entered amount for the subledger journal entry line. Please inform your system administrator or support representative that:

The source assigned to the accounting attribute Entered Amount has no value for extract line number 16406260. Using the Accounting Attribute Assignments form, assign a source to the accounting attribute Entered Amount that provides a valid value.

There is no accounted amount for the subledger journal entry line. Please inform your system administrator or support representative that:

The source assigned to the accounting attribute Accounted Amount has no value for extract line number 16406260. Please make sure the source assigned to the accounting attribute Accounted Amount has a valid value, or assign a different source to this accounting attribute.