Check the detail for your lot size in OMI4 whether the box for "Last lot exact" right on top of the detail is active.
If it is, then remove it and test again, but don't forget to test with higher quantities too see the effect of this box
Check the detail for your lot size in OMI4 whether the box for "Last lot exact" right on top of the detail is active.
If it is, then remove it and test again, but don't forget to test with higher quantities too see the effect of this box