Either nothing qualifies for a pull or there are nothing in back for the items that qualify for a pull. So yes the messaging is not intuitive, but due to how it works we don't know if the pull really gets created.
How often are you seeing an issue here? The device should give an error if anything fails.
Tends to happen on 1 or 2 pogs per week. I would usually have to check TWT to make sure. Then when I make the batch on a pda, more often than not, a batch is made.
Interestingly enough, I don't get this problem with softline pogs.. even though those pogs are the ones that almost always have no pulls.