Age targeting not working for an account

[npurwar]

Twitter account id : 18ce54cmu6v

API Call :

twurl -X POST -H ads-api.twitter.com "/1/accounts/18ce54cmu6v/targeting_criteria?line_item_id=7fszl&targeting_type=AGE&targeting_value=AGE_OVER_21"

Response :

{  
   "errors":[  
      {  
         "code":"INVALID",
         "message":"AGE_BUCKET Targeting criterion with value 'AGE_OVER_21' is not allowed for account",
         "attribute":"targeting_type"
      }
   ],
   "request":{  
      "params":{  
         "line_item_id":"7fszl",
         "targeting_type":"AGE",
         "targeting_value":"AGE_OVER_21",
         "account_id":"18ce54cmu6v"
      }
   }
}

Are there some specific accounts for which age targeting cannot be used?
As far as I know, age targeting was enabled for all twitter accounts some time back.

[juanshishido]

@npurwar: Age targeting requires the VALIDATED_AGE_TARGETING account feature. Your account or partner manager can help you here. For additional details on age targeting, see this post. Hope this helps!