Passing Encoded PAYLOAD data on URL during webservice load testing

[umesh prajapati]

I am trying to perform a load test and I have my Jmeter TestPlan as follow

Test Plan
  |--Thread Group
           |-------Authorizaiton Manager
           |-----------CSV
           |-------------HTTP Request Sampler
                                    |----Listners

Under HTTP request Sampler
Server Name or IP:abc-atest.inf.com
Path:/pnpapp/services/smd/class/?PAYLOAD=${encodedData}
Method:Post

Under CSV
Filename: C:\loadTest\encodedPayload.csv
Variable Names:encodedData

When I run the testplan it gives me error