Accounts have not been fully allocated

I've started a new job - I use Sage for four different companies here. With only one of them- every time I hit "Post" on a transaction I get a Pop Up that says "The following accounts have not been fully allocated". I don't want them to allocate to a project. How do I make these pop ups stop? I can see that on every GL account the box is clicked for Allow Project Allocation - yet it's also clicked on all the GL's in the other companies and I don't get that message on them.

Thanks for your help.