This folder contains the IS document types with names matching the message type, MTxxx where “xxx” represents the message type. IS document types are organized in directories according to the supported version number. For example, the folder wm.sdk.rec.mtxsd.V2012:MTxxx contains the IS document types for version 2012 and the folder wm.sdk.rec.mtxsd.V2013:MTxxx contains the IS document types for version 2013.