Changed Namespace URIs, add validation constraint and common exception handling.

Dennis Labordus · Dennis Labordus · commit 43dce1423226 · 2021-08-04T16:00:34.000+02:00
Signed-off-by: Dennis Labordus &lt;dennis.labordus@alliander.com&gt;
diff --git a/app/src/main/resources/ValidationMessages.properties b/app/src/main/resources/ValidationMessages.properties
@@ -1,3 +1,7 @@
+# SPDX-FileCopyrightText: 2021 Alliander N.V.
+#
+# SPDX-License-Identifier: Apache-2.0
+
 javax.validation.constraints.NotNull.message  = Value must not be null.
 javax.validation.constraints.NotBlank.message = Value must not be blank.
 
