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Small and medium business | Business Central, N...
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Intermittent validation errors on Sales Orders (values appear out of sync)

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Hi all,

I’m experiencing an intermittent issue in Business Central where Sales Orders fail Preview Post with validation errors relating to Qty. to Assemble to Order, even though the fields are visibly populated and Qty. to Ship / Qty. to Invoice are filled in.

The behaviour is inconsistent and difficult to reproduce: the same order may fail, then later post successfully without any changes. I’ve reproduced this using a brand-new item with a simple BOM, so it doesn’t appear item-specific.

A key symptom is that when I change Qty. to Assemble to Order (e.g. from 6 to 12), the error message reports the previous value, as if the posting logic is validating against stale data. The exact same out-of-sync behaviour occurs when changing shipment dates. Waiting a period of time or reopening the order sometimes resolves it, which suggests a recalculation or commit/state issue rather than user error. Lead Time Calculation (including 0D) does not eliminate the problem.
Then when i select preview to post:

I’m trying to determine whether this is a known ATO/BOM recalculation issue, a web client state problem or something else

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