Safety stock journal

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Posted on by CU03101311-0

Hello,

I have an item with Purchase Lead Time (in Item coverage) set to 10 days. When I 'calculate proposal' for safety stock in the safety stock journal, the value returned is always 0.

If I recalculate the safety stock with a Lead Time Margin of '1 day', the system generates safety stock recommendation based on a Total Lead Time of just 1 day.

I'm trying to understand what lead time does the system consider when doing safety stock calculation? Is it the Item coverage lead time or is it defined somewhere else?

Any help is appreciated.

Thank you,

Mayukh

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Hana Xue Microsoft Employee on at

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Hi Mayukh,
The safety stock journal marks multiple calculated quantities for each item, coverage dimension, and usage history, where calculated quantities include average shipments, monthly shipments, and monthly standard deviations for each item's lead time. The lead time mentioned here should refer to the item coverage lead time in the MS document.

In addition, for the calculation of safety stock, you can check the following article, which gives detailed examples:

Dynamics Community Blog Post Details
More explanations you can get in the articles:
Safety stock fulfillment for items - Supply Chain Management | Dynamics 365 | Microsoft Learn
Use the safety stock journal to update minimum coverage for items - Supply Chain Management | Dynamics 365 | Microsoft Learn
Best Regards,
Hana

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sagar_patil 918 Super User 2025 Season 2 on at

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We can set up purchase lead times on a vendor, a vendor trade agreement, an item's coverage settings, or an item.

During master scheduling, Microsoft Dynamics AX searches for the purchase lead time according to the following priority:

The item coverage form > lead time tab. If the Purchase check box is selected, the Purchase Time field is used.

The Site specific order settings form > Purchase Order > tab > Purchase lead time field.

The Default Order Settings form > Purchase Order > tab > Purchase lead time field.

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