While attempting to add a Cisco Firewall running Cisco Adaptive Security Appliance Software Version 9.18(4)52 as a Datasource, you receive the following error :
Aria Operations For Networks 6.14
In v6.14, the Cisco ASA version 9.18(4) is not supported.
Add a Cisco ASA Appliance as per the Support versions mentioned in : Supported Products and Versions