diff --git a/exceptions/updates/MDNewVocabEntryIsStrictlyTypedAsTag.php b/exceptions/updates/MDNewVocabEntryIsStrictlyTypedAsTag.php
new file mode 100644
index 0000000..9f7d111
--- /dev/null
+++ b/exceptions/updates/MDNewVocabEntryIsStrictlyTypedAsTag.php
@@ -0,0 +1,27 @@
+<?PHP
+/**
+ * This file contains an exception class to be used when trying to enter
+ * a vocabulary entry in the wrong vocabulary.
+ *
+ * @file
+ *
+ * @author Joshua Ramon Enslin <joshua@museum-digital.de>
+ */
+declare(strict_types = 1);
+
+/**
+ * This file contains an exception class to be used when trying to enter
+ * a vocabulary entry in the wrong vocabulary.
+ */
+final class MDNewVocabEntryIsStrictlyTypedAsTag extends MDgenericInvalidInputsException {
+    /**
+     * Error message.
+     *
+     * @return string
+     */
+    public function errorMessage() {
+        //error message
+        return 'The entered term is known to always represent a tag entry. ' . $this->getMessage();
+
+    }
+}