#4893 Import Observed FMU data : Add error message

ApplicationCode/Commands/RicImportObservedFmuDataFeature.cpp

@@ -15,10 +15,15 @@
 //  for more details.
 //
 /////////////////////////////////////////////////////////////////////////////////
+
 #include "RicImportObservedFmuDataFeature.h"
 
 #include "RiaApplication.h"
+#include "RiaGuiApplication.h"
+#include "RiaLogging.h"
+
 #include "RicImportFormationNamesFeature.h"
+
 #include "RifReaderFmuRft.h"
 
 #include "RimObservedDataCollection.h"
@@ -53,7 +58,24 @@ void RicImportObservedFmuDataFeature::selectObservedDataPathInDialog()
                                                            QFileDialog::ShowDirsOnly );
 
     QStringList subDirsWithFmuData = RifReaderFmuRft::findSubDirectoriesWithFmuRftData( directory );
-    if ( subDirsWithFmuData.empty() ) return;
+    if ( subDirsWithFmuData.empty() )
+    {
+        QString message =
+            QString(
+                "Could not find the file %1 in any sub-folder of %2.\nThis file is required for import of FMU data." )
+                .arg( RifReaderFmuRft::wellPathFileName() )
+                .arg( directory );
+
+        RiaGuiApplication* guiApp = RiaGuiApplication::instance();
+        if ( guiApp )
+        {
+            QMessageBox::warning( nullptr, "Import of Observed FMU Data", message );
+        }
+
+        RiaLogging::warning( message );
+
+        return;
+    }
 
     RimProject*                proj                   = app->project();
     RimObservedDataCollection* observedDataCollection = proj->activeOilField()