One of our purchasers got this today entering lines in a PO in Dynamics GP. Not one of our more sophisticated users so was unable to get detailed steps on how he got there.
Regardless found nothing online related to this so I thought I'd post our workaround.
As GP would not allow him to save the line or the order, I had him delete the line. He was then able to save the PO, and re-enter the item he was previously having trouble with.
I should add he was trying to enter the site for an inventory item when this message showed. The item site combination was completely valid (as re-entry proved.)
Another mystery message in GP.
