This forum is to discuss different features/issues of Oracle Financials modules ( GL - General Ledger, AP - Accounts Payable, AR - Accounts Receivable, FA - Fixed Assets & CM - Cash Management ).
Go to the Invoice Source and find out the grouping rule. Then go to that grouping rule and check the optional grouping characteristics. What are the fields added here? Delete the values and try again.
OR create a new grouping rule and then attach this rule in the invoice source.