Web Service post request returning 400 bad request

Hi,

I want to create a post method service. I followed the method in documentation. I am getting 400 bad request error in postman.

I have give bpmcsrf token too.

Please suggest

[ServiceContract]

    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]

    public class UsrNumberOfPlannedPerformancesService : BaseService

    {

        // Link to the UserConnection instance required to access the database.

        private SystemUserConnection _systemUserConnection;

        private SystemUserConnection SystemUserConnection

        {

            get

            {

                return _systemUserConnection ?? (_systemUserConnection = (SystemUserConnection)AppConnection.SystemUserConnection);

            }

        }

        [OperationContract]

        [WebInvoke(Method = "POST", RequestFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped,

        ResponseFormat = WebMessageFormat.Json)]

        public int GetPlannedPerformances(string code){

}