If you have a lower than planned yield on a Work Order (say the orderline was to build 100 PRD1000's but only 97 were completed due to yield losses), then
1. Receive the WO for the original order quantity. This will transfer that order quantity into STORES(read next instruction to fix this). 100% of the picked component quantities will be backflushed out of WIP.
2. Do a cyclecount like correction on PRD1000 quantity in STORES (either with the PhysicalCount/Cyclecount form, or via an Inventory Transfer from STORES to CYCLECOUNT.