MSIR.0248 SIRFIELD (subcmd) of (type) field not allowed
This message indicates that a SIRFIELD 'subcmd' command was issued, and that the command could not succeed because it is not allowed on the 'type' of field. For example, this message is issued if you attempt to relate the sort or hash key. See the documentation of the SIRFIELD 'subcmd' command in the Sir2000 Field Migration Facility Reference Manual.
The command is rejected.