Hi there,
 
I have a requirement to trigger a business process with a parameter value from an anonymous web service and get errors while publishing the code in the Creatio environment. Below I have mentioned the complete code of the web service and the error screenshot of the error.
 
Note: I have pre-created the business process with the parameter and written the web service.
I referred other community articles such as 
https://community.creatio.com/articles/web-service-without-authorizatio…
https://community.creatio.com/questions/calling-business-process-parame…
These codes currently seem to be outdated and not working in the Atlas version of creatio. Please give me suggestions to resolve this issue.
 
Code :
 
/* The custom namespace. */
namespace Terrasoft.Configuration.WSO2WSConfirmationServiceNamespace
{
    using System;
    using System.ServiceModel;
    using System.ServiceModel.Web;
    using System.ServiceModel.Activation;
    using Terrasoft.Core;
    using Terrasoft.Web.Common;
    using Terrasoft.Core.Entities;
    using Terrasoft.Core.Process;
    using Terrasoft.Core.Process.Configuration;
    [ServiceContract]
    [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]
    public class WSO2WSConfirmationService : BaseService
    {
        /* The link to the UserConnection instance required to access the database. */
        private SystemUserConnection _systemUserConnection;
        private SystemUserConnection SystemUserConnection
        {
            get
            {
                return _systemUserConnection ?? (_systemUserConnection = (SystemUserConnection)AppConnection.SystemUserConnection);
            }
        }
        /* The method that returns the confirmation of buttons. */
        [OperationContract]
        [WebInvoke(Method = "GET", RequestFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped,
        ResponseFormat = WebMessageFormat.Json)]
        public string ConfirmationService(string guid, bool status)
        {
            new Guid(guid);
            string result = "Guid is missing";
            if (!string.IsNullOrEmpty(guid)) {
                if (status == false)
                {
                    var manager = UserConnection.ProcessSchemaManager;
                    var processSchema = manager.GetInstanceByName("WSO2Process_3c0d24a");
                    var moduleProcess = processSchema.CreateProcess(UserConnection);
                    if (processSchema.Parameters.ExistsByName("ProcessSchemaConfirmationId"))
                    {
                        moduleProcess.SetPropertyValue("ProcessSchemaConfirmationId", guid);
                    }
                    moduleProcess.Execute(UserConnection);
                    /*ProcessSchema schema = UserConnection.ProcessSchemaManager.GetInstanceByName("WSO2Process_3c0d24a");
                    //schema = UserConnection.ProcessSchemaManager.GetInstanceByUId(leadManagementProcessUId);
                    //different engines for interpretable and compiled BP
                    bool canUseFlowEngine = ProcessSchemaManager.GetCanUseFlowEngine(UserConnection, schema);
                    if (canUseFlowEngine)
                    {
                        var flowEngine = new FlowEngine(UserConnection);
                        var param = new Dictionary();
                        param["ProcessSchemaConfirmationId"] = guid.Id.ToString();
                        flowEngine.RunProcess(schema, param);
                        
                    }
                    else
                    {
                        Process process = schema.CreateProcess(UserConnection);
                        process.SetPropertyValue("ProcessSchemaConfirmationId", guid.Id);
                        process.Execute(UserConnection);
                    }*/
                    result = "Response posting is cancelled, You can close this tab";
                }
                else {
                    result = "WSO2 endpoint intergration is pending";
                
                }
            }
            
            return result;
        }
    }
}
