Message channel agent (MCANAME)
This parameter is reserved and should not be used.
The possible values are:
- *SYSDFTCHL
- The value of this attribute is taken from the system default channel of the specified type.
- *NONE
- The MCA program name is blank.
This parameter cannot be specified for a channel type (CHLTYPE) of *RCVR, *SVRCN, or *CLUSRCVR.