Do not carry the on-hand balance in the stock record for the superseded NSN forward to the new stock record for the superseding NSN. Now you will not have to remark materiel already in stock when an item is received under a new or superseding NSN. However, review the computation of demand and frequency of demand of both stock records simultaneously to determine re- plenishment quantities. When a replenishment is required, requisition the new or superseding NSN.
SUBSTITUTE ITEMWhen a sub- stitute item is received, prepare a new stock record card. Record the cognizance sym- bol, NSN, description, unit of issue, unit price, storage location, and a notation ITEM IS SUBSTITUTE FOR NSN ____________ as shown in figure 12-23. Do not show an allowed quantity. Notate SUBSTITUTE ITEM IS NSN __________________ in the lowest block of the REQUISITIONS OUTSTANDING column on the stock record for the primary item.
To determine replenishment quantities, review the computation of demand and frequency of demand of both stock records simultaneously.