MSIR.0434 Warning: value matches WARN format in FILE (file) record (rec) (field) = (value)
This informational message indicates that an update to record number rec in file file for field field was invoked, and that the value being stored does not match the primary nor any ALTERNATE format specified in the SIRFIELD FORMAT and/or RELATE commands for field, but it does match the ERROR format for the field, and ERROR WARN has been specified on the SIRFIELD FORMAT or RELATE command for field.
The update was invoked from User Language or IFAM.