Symptom

You are trying to import an access control policy (ACP) that you did export and you are getting an alert saying "Back-end Failed" or "Policy name is invalid" and then the alert list a couple of security-zones that are attached with your ACP.

Conditions

The issue is seen when you have an ACP with security-zones objects that include special characters like "." in the name, when trying to import this policy the destination FMC will not allow it and it will display an alert for you as described in the Symptoms section. for example, security-zones like this will cause the issue rboshmaf.test while rboshmaf_test will not.

Workaround

Make sure that you don't use/include security-zones with special characters like "." in your export so that when you import the .sfo file the FMC will not accept it and display an alert for you. In case you already have security-zones with special characters then you will need to rename them from the source FMC; create new export and then on the destination FMC create the security-zones objects for the match (same naming format with no special character) and then import the .sfo file.

Further Problem Description