Often you must modify the bill of a rework order by adding components. Sometimes, as well, you must modify the bill of a regular work order. For example, there may be an engineering change order needing immediate implementation for all work-in-process, including orders that have been exploded, allocated, or released.
How you make a replace an existing component with a new one depends on the work order status.
• If an order has been released, you can issue the new component and return the old one. This results in an unfavorable material usage variance for the new component and a favorable usage variance for the old one. Use Work Order Bill Maintenance (16.13.1) to add the new component to the work order before issuing it.
• If an order is allocated or exploded, use Work Order Bill Maintenance to add the new component, updating the quantity required and quantity allocated, and delete the old one.
After modifying a work order bill, you should not change the status back to Firm Planned, since that causes the standard bill to be re-exploded.