Overview: Unclear error message displays when optimistic locking triggered by tags assignment to Instance record.
Reproduces only for “Instance” records.

Steps to reproduce:

1. Log in into Snapshot environment as user with following permissions:
   Inventory: All permissions
   Tags: All permissions

2. Go to “Inventory” app

3. Find and open the same “Instance” record detail view pane in two different browser tabs.

4. In browser tab #1:
   Click on the "Tags" icon on the top-right side of Instance pane and assign one tag

5. In browser tab #2:
   Click on the "Tags" icon on the top-right side of Instance pane and assign one another tag

Expected result: Following message displays in error toast notification:
”This record cannot be saved because it is not the most recent version.”
NOTE: see how it works for “Holdings” and “Items”:

Actual result: Following message displays in error toast notification:
”Cannot save tag data to record. Check that you have the required permissions.”