Part of the subcontracting process is to use Purchase Order Maintenance (5.7) to create a subcontract PO for the subcontract operation. When creating a subcontract PO for line items that reference Advanced Repetitive cumulative orders, use the lot/serial field to enter the WIP lot/serial number of the material being sent for subcontract processing; see Purchase Order Maintenance WLT Lot/Serial Field.

When the system generates the cumulative order ID, it searches for purchase orders associated with the cumulative order and automatically updates the work order ID and operation on the purchase order. The system also replaces existing closed cumulative order IDs with an open cumulative order ID on the appropriate purchase orders. The purchase orders must be connected to a subcontract routing operation through Subcontract Routing/OP PO Maint (5.11) or Subcontract Order MRP % Maint (5.5.1.21).

The lot/serial entered in this field defaults as the input lot/serial number in the WIP Lot Input Queue Issue Data frame in Purchase Order Receipts when the order is being received. This value also prints on reports generated by Purchase Order Print (5.10).

This program cannot be used to backflush lot/serial controlled components, or components that cannot be issued from the default issue location. Use Backflush Transaction (18.22.13) to manually backflush the operation for the component material received. If you attempt to receive this type of component material, only the extended subcontract cost for the PO is added to the cumulative order operation's cumulative subcontract cost.

Use the WIP Lot Input Queue Issue Data frame to enter details of the WIP material being consumed from the input queue of the subcontract operation. Use the WIP Lot Output Queue Receipt Data frames to record details of the material being produced and moved to the output queue of this subcontract operation.

The system backflushes these WIP lot/serial numbers. The input WIP lot/serials are consumed, and the output WIP lot/serials are produced. WIP lot/serial QOH balances, cumulative totals, and tracing history records are updated accordingly. The supplier ID is used as the work center ID to update WIP lot/serial QOH balances.

When WIP Lot Trace (WLT) is active, all of the inventory-related fields in the purchase order receipt detail are disabled, including Site, Location, Lot/Serial, Ref, Supplier Lot, Multi Entry, and Change Attributes. All lot/serial information should be specified using the WLT frames that display.

Purchase Order Returns (5.13.7) updates QOH balances, cumulative totals, and WLT tracing history to reflect the return of materials at a subcontract operation. The WIP Lot Input Queue Issue Data and WIP Lot Output Queue Receipt Data frames appear when processing WLT-controlled material. Any material being returned is reverse backflushed.

For example, instead of receiving material to WIP, material is removed from WIP. The system basically processes a PO receipt with all negative quantities.

If Move To Next Operation is Yes, the system removes WIP lot/serials from WIP inventory at the input queue of the first milestone operation following the subcontract operation. When this value is No or a milestone operation does not exist after the subcontract operation, then the system removes the WIP lot/serials from the output queue of the subcontract operation.

Processing a subcontract operation when using WIP Lot Trace and Advanced Repetitive adds a few minor steps to the subcontract procedure.

Follow the procedure outline above, with the following additional steps:

Use the WIP Lot Inventory Status Report (3.22.13.13) to display the operation and queue where specific WIP and item material is located during manufacturing.