Troubleshooting Tip: How to resolve API error 'option empty or invalid, argc(0)'

The API can be used to save FortiManager configuration, and to restore it at a later point.

The following is an example that can be used to obtain FortiAnalyzer settings inside of a 'System Template':

{
"session": "{{fmg-session}}",
"id": 1,
"method": "get",
"params": [
  {
"url": "/pm/config/adom/root/devprof/Test-System-Template/log/fortianalyzer/setting"
  }
 ]
}

When trying to restore this configuration using the previous information by using SET method, where 'enc-algorithm' equals 0, the following error will appear, since 0 is not an expected numeric value for 'enc-algorithm':

{

    "result": [

        {

            "status": {

                "code": -9001,

                "message": "log/fortianalyzer/setting/enc-algorithm : invalid value - prop[enc-algorithm]: option empty or   invalid, argc(0)"

            },

            "url": "/pm/config/adom/root/devprof/Test-System-Template/log/fortianalyzer/setting"

         }

     ],

    "id": 1

}

Values provided are referred by numbers instead of human-readable names. In order to obtain the parameters values, that can be used in the restoration, it is advised to use verbose:1 when saving configuration via API method GET: 

{

    "session": "{{fmg-session}}",

    "id": 1,

    "method": "get",

    "verbose": 1,  <----- Verbose mode.

    "params": [

        {

            "url": "/pm/config/adom/root/devprof/Test-System-Template/log/fortianalyzer/setting"

        }

     ]

}

{

    "result": [

        {

            "data": {

                "access-config": "enable",

                "certificate": [],

                "certificate-verification": "disable",

                "enc-algorithm": null,

                "hmac-algorithm": "sha256",

                "ips-archive": "enable",

                "max-log-rate": 0,

                "monitor-failure-retry-period": 5,

                "monitor-keepalive-period": 5,

                "oid": 5712,

                "preshared-key": null,

                "priority": "default",

                "reliable": "enable",

                "ssl-min-proto-version": "default",

                "upload-option": "realtime",

                "vrf-select": 0

            },

            "status": {
                "code": 0,

                "message": "OK"

            },

            "url": "/pm/config/adom/root/devprof/Test-System-Template/log/fortianalyzer/setting"

        }

    ],

    "id": 1

}