Resolve Cancel Action Messages by Increasing Negative Days in Dynamics 365 SCM
Short answer
D Increase negative days to be greater than the item lead time.
Question
Key Takeaways
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.
Common mistake: 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.
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.
Community Comment Notes
Contributors referenced the dynamic-negative-days documentation, confirming that when an existing purchase order receives a Cancel action message after a lead-time change, raising negative days above the lead time is the corrective action.
Official Reference
This link opens the official vendor documentation in a new tab.
Community Votes
100% of anonymous learners picked answer D. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 4 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 4
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juapem 👍 2 Answered DNegative days will allow you to be late on the SO without creating the actions messages
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4cc52dd 👍 1 Answered Dhttps://learn.microsoft.com/en-us/dynamics365/supply-chain/master-planning/more-about-dynamic-negative-days#:~:text=Therefore%2C%20it%20will%20arrive%20on%20January%207.-,The%20existing%20purchase%20order%20gets%20a%20Cancel%20action%20message%2C%20because%20the%20creation%20of%20the%20new%20planned%20purchase%20order%20has%20made%20it%20redundant.,-The%20following%20illustration%20shows%20a%20screenshot%20of
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Grabe78 👍 1The company does not use negative days, so the option D is not correct
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juapem 👍 1IMO should be option D
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