Comment 23 for bug 1998494

I have tested adding empty call numbers on https://tiffany-master.gapines.org/eg2/en-US/staff/ and was able to do so successfully.

I also was able transfer an item to a library with no matching call number without creating an empty call number first.

I did have to create an empty call number to transfer a precat.

Is there anything else we need to test with this? Adding blank call numbers??