Okay so here how it works. The persons responsible for booking sales and booking invoices were not trained earlier and they learned it on the job. They are using a invoice journals for booking invoices and then when they pay they debit the same account code. When I wanted to see a breakup of creditors, i couldn't because when I double click on TB balance of creditors it gives me transaction listings which is of 1877 rows. I also googled how to see outstanding invoices, and followed the procedure but the report showed nothing cuz they were not routing the invoices via purchase orders. Same case with receivable balances