diff --git a/bookstore/src/main/resources/messages.properties b/bookstore/src/main/resources/messages.properties
new file mode 100644
index 0000000..763e544
--- /dev/null
+++ b/bookstore/src/main/resources/messages.properties
@@ -0,0 +1,2 @@
+typeMismatch.book.year  = Invalid year format
+typeMismatch.book.price = Invalid price format