--- /dev/null
+---
+layout: default
+title: Message detail for PLMC21
+toc: false
+---
+
+Detail for Marionette Collective message PLMC21
+===========================================
+
+Example Message
+---------------
+
+ Cannot validate input 'service': Input string is longer than 40 character(s)
+
+Additional Information
+----------------------
+
+Every input you provide to a RPC request is validated against it's DDL file. This error will be shown when the supplied data does not pass validation against the DDL.
+
+Consult the 'mco plugin doc' command to view the DDL file for your action and input.