Clicking on the 'Add/Remove Multiple' button in a glide_list type field makes it possible to save the record with an empty value for the mandatory fieldDescriptionClicking on the 'Add/Remove Multiple' button in a glide_list type field makes it possible to save the record with an empty value for the mandatory fieldSteps to Reproduce Steps to reproduce1. Go to incident > Open 2. Open any record and click the 'Add/Remove Multiple' button in watch listOnce the Edit Member screen is shown up, click cancel 3. Remove the value of Caller field.4. Click Save Actual result: It is able to save the record with an empty value for Caller field (mandatory)Expected results: The record should not be able to save and "The following mandatory fields are not filled in: Caller" should be shownWorkaroundThis issue is under review. If you are experiencing this problem, contact ServiceNow Customer Support.Related Problem: PRB1459184