Resolve Cancel Action Messages by Increasing Negative Days in Dynamics 365 SCM
A manufacturing company uses master planning in Dynamics 365 Supply Chain Management. The production planner increases the lead time of an item. On the next master planning output, the planner receives a cancel action message on existing purchase orders. The message includes a suggested earlier date for the planned purchase orders. The demand for the item has not changed since the original purchase order was placed. Dynamic negative days is not used. You need to resolve the issue. What should you do?
Community Votes
100% of anonymous learners picked answer D. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
Negative days define how late existing supply can be without triggering new supply; raising negative days above the lead time prevents the planning engine from canceling and recreating purchase orders.
When increasing an item's lead time produces cancel action messages suggesting earlier planned purchase orders (and demand is unchanged), increase the negative days value to be greater than the item lead time.
Do not increase or decrease positive days (they affect future anticipated receipts, not the cancel message), and do not decrease negative days - lowering negative days makes the problem worse by tightening the tolerance.
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Expert Analysis
Why the Answer Is Correct
The production planner increased the item lead time and then received a cancel action message on existing purchase orders with a suggested earlier date, even though demand was unchanged. In Dynamics 365 Supply Chain Management, negative days (and dynamic negative days) control how late existing supply can be before the planning engine creates new supply or cancels existing supply. Because the lead-time increase made the existing purchase orders appear late, increasing the negative days value to be greater than the item lead time gives the system enough tolerance to keep the existing orders instead of canceling them.Why the Other Options Are Wrong
- Option A (increase positive days) and Option B (decrease positive days) affect positive days, which govern how far ahead anticipated receipts are considered; they do not resolve the cancel action message caused by negative-day tolerance.
- Option C (decrease negative days below the lead time) tightens the tolerance and would increase, not resolve, the cancel messages.