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When a demand is generated for materials from different Work Orders MRP is not possible to differentiate which requisition corresponds to which demand. Without the ability to connect the demand to the originating requisition, once the PR>PO is processed and the parts are received into inventory, the inventory can then be reserved by any of the WOs.

This is challenging for Aerospace Industry, due to having strict controls over the parts to be used for specific work tasks. 

Customers are using custom fields such as “Tail No: provides the Aircraft tail number. and Demand Info - provides the WO number. in the purchase requisition lines to resolve the issue. However this leads to other challenges when the PR line contains multiple Work orders for same due date. 

What is expected is a soft pegging between the work tasks material demand and Purchase Requisition and the Purchase Orders, so that when the part is received to the inventory correct part is reserved to the correct demand from the Work Tasks.

I would like to know if this is a common issue with other customers and any mitigation strategies taken?

Hi Achini! I think you may have to rethink the use of MRP here, as the general function of the MRP engine is to balance overall supply and demand and receive the parts into inventory (from the resulting requisitions), which will then be available to be reserved/picked for any demand. I haven’t looked at functionality, but maybe you can see if pegging the PO’s supply to a work order is possible or not. If pegging is an options, then the user can peg quantities on the PO to the desired work orders. Hopefully this helps.

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