action for process applications for authorities

SchengenVisaApi/ApplicationLayer/Services/VisaApplications/Exceptions/ApplicationAlreadyProcessedException.cs

@@ -0,0 +1,6 @@
+using ApplicationLayer.GeneralExceptions;
+
+namespace ApplicationLayer.Services.VisaApplications.Exceptions
+{
+    public class ApplicationAlreadyProcessedException() : ApiException("This application already processed or closed by applicant.");
+}