Symptoms

ASM import fails after upgrade due to hostnames. The restjavad.0.log file displays a messages similar to: 'Failed POST to target https://localhost/mgmt/cm/asm/working-config/policies/<id>/host-names: java.lang.IllegalArgumentException: Duplicate item'

Impact

ASM configuration import fails.

Conditions

The issue happens when host-names are configured and upgrade was performed from a version before 5.4.

Workaround

On BIG-IQ, All existing host-names inside a policy must be deleted and recreated either manually or by importing BIG-IP(s) configuration (easier).

Fix Information

This issue no longer occurs.

Behavior Change