When setting up new notifications for a custom object in the Modern UX, we are receiving the error message CMN-0009: Attribute 'Type' has invalid Lookup Value 'BRM_SEND_NOTIFICATION'
This does not happen for all custom object but for one custom object.
Clarity 16.3.1
Seeded records in the BRM_SEND_NOTIFICATION table were missing for this custom object.
Reach out to Broadcom Support for further analysis.