Additional check added to prevent untimely processing of accounts payable costing

An additional check is added to prevent the Vendor Invoice Center Entry-Costing process when a purchase order is received but is still being processed as part of a group of transactions in the WL Entry Batch Receiving Report function.

This update searches for purchase orders that have been received but are part of a WL Entry Batch Receiving Report cycle that is currently in process and, if found, returns an error that disallows accounts payable costing on the purchase order.

Previously, the Costing process would initiate even when a purchase order is received but is still processed as part of a group of transactions in a WL Entry Batch Receiving Report cycle. This would set the purchase order in an invalid status, meaning it was not 'completed received' but was 'costed' instead. Additionally, this could terminate the WL Entry Batch Receiving Report process.