The record is not saved if you select type "s" in field 006

Steps to Reproduce:

1. Go to Inventory
2. Find a record that has source=marc
3. Go to the Actions dropdown and select Edit in quickMARC
4. Go to field 006 or create it if it was not created
5. Select type "t" or "a" if it is not selected
6. Hit Save
7. Edit same record
8. Change the type to "s"
9. Fill blocks in Cont or edit (this step is optional)
10. Click «Save & close»

Expected Results:

The record is saved

Actual Results:

Error with the text " Record not saved: Communication problem with server. Please try again."