Custom Wire Format supports the conversion of data to a different code page (for schema string simple types) or encoding (for schema numeric simple types), or both.
A message set contains properties to enable the character (CCSID) and numeric encoding (Byte Order / Float Format) information to be specified. If you generate a message dictionary for deployment to a WebSphere Message Broker, then this information can be overridden using the appropriate fields of the WebSphere MQ message header.