Important!!! Business Process From Custom Web-Service (Cookie-Based / Anonymous)

Hi Team,

There is an Usecase where I have to call Business Process from web service. In Creatio, we have 2 types of service: cookie-based & Anonymous. I have tried both type of services to invoke Business Process, but getting below error: 401

 

Query: Can you guide me how to call BP using Anonymous & Cookie Based Web-service ?

(Cookie-Based Service)

[OperationContract]
[WebGet(UriTemplate = "UnsubscribeStatusBP?ContactId={ContactId}&BulkemailId={BulkemailId}&EndUserResult={EndUserResult}", ResponseFormat = WebMessageFormat.Json)]
public string UnsubscribeStatusBP(string ContactId, string BulkemailId, string EndUserResult)
        {
            // 1. Get UserConnection from the BaseService context
            UserConnection userConnection = UserConnection;
            IProcessExecutor processExecutor = userConnection.ProcessEngine.ProcessExecutor;
            // SessionHelper.SpecifyWebOperationIdentity(HttpContextAccessor.GetInstance(), SystemUserConnection.CurrentUser);
            
            // 1. Validate ContactId (GUID)
            if (!Guid.TryParse(ContactId, out Guid contactGuid)) {
                return JsonConvert.SerializeObject(new { Success = false, Message = "❌ Invalid Parameter ContactId. Must be a valid GUID." });
            }
        
            // 2. Validate BulkemailId (GUID)
            if (!Guid.TryParse(BulkemailId, out Guid bulkemailGuid)) {
                return JsonConvert.SerializeObject(new { Success = false, Message = "❌ Invalid Parameter 'BulkemailId'. Must be a valid GUID." });
            }
        
            // 3. Validate EndUserResult (String length, null check, and basic sanitization)
            if (string.IsNullOrWhiteSpace(EndUserResult) || EndUserResult.Length > 10) {
                return JsonConvert.SerializeObject(new { Success = false, Message = "❌ Invalid Parameter 'EndUserResult'. Must be 1-10 characters." });
            }

            string sanitizedResult = Regex.Replace(EndUserResult, @"[^a-zA-Z_]", "");
            
            try {
                // 1. Prepare parameters
                var inputs = new Dictionary {
                    { "ContactId", contactGuid },
                    { "BulkemailId", bulkemailGuid },
                    { "EndUserResult", sanitizedResult }
                };
         
                // 2. Execute process via ProcessEngine
        
                userConnection.RunProcess(
                    "UsrAllManageUnsubscribeStatus", 
                    inputs
                );
         
                return JsonConvert.SerializeObject(new { Success = true, Message = "✅ Business Process is triggered." });
            }
            catch (Exception ex) {
                return JsonConvert.SerializeObject(new { Success = false, Message = $"❌ {ex.Message}" });
            }
        }

(Anonymous Web-Service)

[OperationContract]
[WebGet(UriTemplate = "UnsubscribeStatusBP?ContactId={ContactId}&BulkemailId={BulkemailId}&EndUserResult={EndUserResult}", ResponseFormat = WebMessageFormat.Json)]
public string UnsubscribeStatusBP(string ContactId, string BulkemailId, string EndUserResult)
{
	// 1. MUST BE FIRST: Set the identity to SystemUser for anonymous calls
	// This connects the "guest" request to a real user account (Supervisor) internally
	SessionHelper.SpecifyWebOperationIdentity(HttpContextAccessor.GetInstance(), SystemUserConnection.CurrentUser);
 
	string result = "{}";
 
	// 1. Validate ContactId (GUID)
	if (!Guid.TryParse(ContactId, out Guid contactGuid)) {
		return JsonConvert.SerializeObject(new { Success = false, Message = "❌ Invalid Parameter ContactId. Must be a valid GUID." });
	}
 
	// 2. Validate BulkemailId (GUID)
	if (!Guid.TryParse(BulkemailId, out Guid bulkemailGuid)) {
		return JsonConvert.SerializeObject(new { Success = false, Message = "❌ Invalid Parameter 'BulkemailId'. Must be a valid GUID." });
	}
 
	// 3. Validate EndUserResult (String length, null check, and basic sanitization)
	if (string.IsNullOrWhiteSpace(EndUserResult) || EndUserResult.Length > 10) {
		return JsonConvert.SerializeObject(new { Success = false, Message = "❌ Invalid Parameter 'EndUserResult'. Must be 1-10 characters." });
	}
 
	string sanitizedResult = Regex.Replace(EndUserResult, @"[^a-zA-Z_]", "");
 
	try {
		// 1. Prepare parameters
		var inputs = new Dictionary<string, object> {
			{ "ContactId", contactGuid },
			{ "BulkemailId", bulkemailGuid },
			{ "EndUserResult", sanitizedResult }
		};
 
		// 2. Execute process via ProcessEngine
 
		SystemUserConnection.RunProcess(
			"UsrAllManageUnsubscribeStatus", 
			inputs
		);
 
		return JsonConvert.SerializeObject(new { Success = true, Message = "✅ Business Process is triggered." });
	}
	catch (Exception ex) {
		return JsonConvert.SerializeObject(new { Success = false, Message = $"❌ {ex.Message}" });
	}
}