Cu has a small IBM (Dell EMC) tape library with 2 ea. LTO8 tape drives. Veeam inventoried the new LTO-8 tapes tapes and put them in the free pool. The catch? Cu only had LTO6 (L6 suffix) barcode labels on hand, so we used them.

Created GFS media pool and tape copy job. I cannot seem to manually add tapes from the free pool to the GFS pool.

The job seems equally incapable of automatically adding free media on demand and just hangs saying it needs a tape.

But we clearly have tapes in the free pool. And they are definitely LTO-8 cartridges. Could the L6 barcode suffix cause Veeam to think that they are LTO-6 cartridges thus incompatible with LTO-8 drives? Or have I likely committed some other configuration or procedural faux pas?
TIA