CASE PM-34293-19-201022:

Previously, saving the condition created with the logical expression “Change” for additional fields indicated the Expression as invalid, even though it is a possibility within the logical operators available for the additional field.

A setting was made in the Admin console (ASMSAdministrator), now when creating a rule with the condition of additional fields, the logical operator “Change” will not be displayed.

⚐ Note: Conditions that have this logical operator will not generate an error in the creation of the rules.