Try double-checking the preview reorder action on inventory, confirming that it's valid for reorder. Also, check if the vendor is valid.
You can also verify if there are no global restrictions or automation scripts that could stop the cron from adding the items to the PR line. Can you create the PR for the vendor and select the item that should be considered in the reorder process?
Cheers.
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Maycon Belfort
BPD Zenith
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