diff --git a/internal/app/app.go b/internal/app/app.go
index 752fc2e..2e092d6 100644
--- a/internal/app/app.go
+++ b/internal/app/app.go
@@ -21,32 +21,32 @@ var (
 func Run() {
 	context, err := configureContext()
 	if err != nil {
-		os.Exit(1)
+		logErrorAndExit(err, 1)
 	}
 
 	err = loginToPiwigoAndConfigureContext(context)
 	if err != nil {
-		os.Exit(2)
+		logErrorAndExit(err, 2)
 	}
 
 	filesystemNodes, err := localFileStructure.ScanLocalFileStructure(context.LocalRootPath)
 	if err != nil {
-		os.Exit(3)
+		logErrorAndExit(err, 3)
 	}
 
 	categories, err := getAllCategoriesFromServer(context)
 	if err != nil {
-		os.Exit(4)
+		logErrorAndExit(err, 4)
 	}
 
 	err = synchronizeCategories(filesystemNodes, categories)
 	if err != nil {
-		os.Exit(5)
+		logErrorAndExit(err, 5)
 	}
 
 	err = synchronizeImages()
 	if err != nil {
-		os.Exit(6)
+		logErrorAndExit(err, 6)
 	}
 
 	_ = authentication.Logout(context.Piwigo)
@@ -95,3 +95,8 @@ func initializeUploadChunkSize(context *AppContext) error {
 	logrus.Debugln(context.ChunkSizeBytes)
 	return nil
 }
+
+func logErrorAndExit(err error, exitCode int) {
+	logrus.Errorln(err)
+	os.Exit(exitCode)
+}
diff --git a/internal/app/category.go b/internal/app/category.go
index c1eac45..d5d0e4e 100644
--- a/internal/app/category.go
+++ b/internal/app/category.go
@@ -1,6 +1,7 @@
 package app
 
 import (
+	"errors"
 	"github.com/sirupsen/logrus"
 	"haefelfinger.net/piwigo/DirectoriesToAlbums/internal/pkg/localFileStructure"
 	"haefelfinger.net/piwigo/DirectoriesToAlbums/internal/pkg/piwigo/category"
@@ -48,10 +49,20 @@ func createMissingCategories(missingCategories []string, existingCategories map[
 	// in the right order and we have the parent available while creating the children
 	sort.Strings(missingCategories)
 
-	logrus.Warnln("Creating missing albums (NotImplemented)")
 	for _, c := range missingCategories {
-		logrus.Debug(c)
+		logrus.Infof("Creating category %s",c)
+
+		// create category on piwigo
+
+		// build new map entry
+
+		// get parent entry by path
+		// set parent entry id
+
+		// calculate new map key
+		// add to existing map
+
 	}
 
-	return nil
+	return errors.New("NOT IMPLEMENTED")
 }
diff --git a/internal/app/images.go b/internal/app/images.go
index fafe1c1..7134189 100644
--- a/internal/app/images.go
+++ b/internal/app/images.go
@@ -1,11 +1,14 @@
 package app
 
-import "github.com/sirupsen/logrus"
+import (
+	"errors"
+	"github.com/sirupsen/logrus"
+)
 
 func synchronizeImages() error {
 	findMissingImages()
 	uploadImages()
-	return nil
+	return errors.New("NOT IMPLEMENTED")
 }
 
 func findMissingImages() {