Two-Way Match (2wm) POs are not closing automatically

Two-Way Match (2wm) POs are not closing automatically

We have at least 4 POs that are still in 'Open' status even though they have been invoiced and paid and I can't figure out why they aren't closing automatically.

3 of them are 1 line pos...the other has 3 lines where 2 appeared to have closed correctly but line 1 still remains open.

All of the POs are set to 2WM.

All shipments on the POs have a Receiving Tolerance of 100%, Invoice Tolerance 0%

All of the POs have been fully invoiced

All of the POs' shipments in question have gone to Closed for Invoicing.

Receipt Closing Point at our OU level is RECEIVE.