Remove Bins: Item has pending transactions

We are getting the following error in the Exception report when trying to remove bins from Item/Site Records: ''Item has pending transactions''.

But the item has no quantity in inventory. We also ran the SQL scripts mentionned in the KB 857144 to find allocated, but nothing was found.  

We're using IV, SOP, POP, Manufacturing MO, no 3rd party products.

We also reconciled POP documents, SOP documents, and Inventory.

Any idea how to find the 'pending transactions'?

Thanks,

Sylvie