Dear all,
When I did change Period status to "Closed" I got above error message. Then I opened Inventory transaction to check all transaction that had "Physical Date" but "Financial Date" is blank, and existing Physical amount as below screen short:

I view detail PO to check and found that these lines is Product receipt cancelled lines:

Because we did product receipt by using mobile device, so there are existing workID with status is "Closed". So when we did cancel the incorrect PR, we have to create new negative line and post Receipt for this negative.
Do you think these above transactions are the root cause of error message when I tried to close period?
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