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MFG/PRO 9.0 User Guide Volume 3: Manufacturing - QAD.com

MFG/PRO 9.0 User Guide Volume 3: Manufacturing - QAD.com

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• Closed. Co-product costs are re-averaged. Items are received to the<br />

work order WIP site using current average costs. These costs are<br />

deducted from WIP. The re-averaging process takes into account<br />

quantities received during previous receipt transactions for the same<br />

work order.<br />

If quantities are received to a different site than the work order WIP site, it<br />

is likely that the inventory quantity on hand is less than the quantity<br />

received. This increases the chance that some of the costs cannot be<br />

allocated and re-averaged at the WIP site and that costs will be booked to<br />

the discrepancy account for the base process.<br />

To maximize the accuracy of average costs and reduce costs booked to<br />

discrepancy accounts, the following should be emphasized.<br />

• Complete reporting of co-product and by-product quantities when all<br />

quantities for all items are <strong>com</strong>pleted.<br />

• Setting of work order status to Closed when receipt quantities are<br />

reported.<br />

• Running of Work Order Accounting Close on a regular basis to<br />

process recently closed work orders.<br />

The cost change taken to inventory is bounded as follows.<br />

• Upper limit. Greater of the existing average cost or calculated work<br />

order unit cost.<br />

• Lower limit. Lesser of the existing average cost or calculated work<br />

order unit cost.<br />

Rolling Up Lead Times<br />

The lead time to produce the co-products resulting from a base process is<br />

the same as the lead time for the base process. Cumulative Lead Time<br />

Roll-Up (13.12.14) copies the manufacturing lead time and the<br />

cumulative lead time for a base process to its co-products. Typically, the<br />

roll-up program is run for all items, not just those involved in co-product/<br />

by-product structures.<br />

By-product lead times are not derived from the base process, but from<br />

roll-ups of regular product structures and routings. Enter by-product lead<br />

times in Item Planning Maintenance (1.4.7) or Item-Site Planning<br />

Maintenance (1.4.17).<br />

CO-<strong>PRO</strong>DUCTS/BY-<strong>PRO</strong>DUCTS 73<br />

Tip<br />

Re-averaging of<br />

co-product costs is<br />

time-sensitive. The<br />

greater the time<br />

between receipt and<br />

close, the greater<br />

the probability that<br />

some of the<br />

products produced<br />

have been<br />

consumed.

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