Working with WIP Lot Trace
Before you begin using WLT, you should note that some order processing procedures are slightly modified to support WLT data entry. Additionally note that:
• WIP material cannot be traced at non-milestone operations.
• WIP lot/serial balances can reside only at milestone operations.
• Some normally editable fields are not editable. Instead, WLT frames are used to record that information.
• WIP quantity-on-hand (QOH) balances cannot reside in the input queue of the first milestone operation, even if the first milestone operation is not the first operation.
• Any information entered in WLT frames is used to update QOH balances and WLT tracing history records.
• Before processing any WLT-modified transactions, the system checks for associated WLT routing or BOM registrations that include lot splitting, combining, and size restrictions. If none are found, the system then looks for related restrictions in WIP Lot Trace Control.