Dynamics Community Forum Thread Details

Why is there a 1-hour gap between the production order due time and the end of the last operation?

Hi everyone,

I'm trying to understand a scheduling behavior in standard Business Central Manufacturing.

Whenever a production order is planned, the last routing operation always finishes exactly one hour before the due date/time of the production order line.

I've already checked the following:

Default Safety Lead Time in Manufacturing Setup is empty.
Safety Lead Time on the item is empty.
The Shop Calendar is configured as a 24-hour calendar (so it is not caused by working hours).
There are no Move Time or Wait Time values in the routing.
This is standard scheduling without any customizations affecting production planning.

The operation ends one hour before the due date of the production order line. The operation is a outsourced operation with a 24 hour per day capacity. No capacity restrained resource.

Has anyone seen this behavior before or knows where this one-hour offset comes from in the standard application? Is there a setting or part of the scheduling logic that I'm overlooking?

We are running Business Central 28.2 (SaaS).

Any insights would be greatly appreciated.

Categories:

Dynamics 365 Business Central

Hello,

This is most likely caused by the Shop Calendar ending time, not by Safety Lead Time. In Business Central, the production order Due Date is date-only, and backward scheduling places the last routing operation at the latest available capacity before that date. Since Business Central does not allow 24:00 as a time value, a “24-hour” calendar is often configured with an ending time such as 23:00, which makes the routing end at 23:00 on the previous day. Check the Shop Calendar Working Days and the calculated Work Center Calendar for the subcontracting work center; after correcting the shifts, recalculate the work center calendar and refresh the production order.

Regards,
Oussama Sabbouh

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