Use this to specify the userid under the authority of which PLT programs will run during CICS initialization. The userid must
have appropriate authorization (as determined by the PLTPISEC
parameter) to access all the resources used by the programs. Enterprise Server will check that the CICS region has authority
to act as a surrogate for the userid specified.
If you do not specify PLTPIUSR, the user specified when starting the enterprise server/CICS region is used. Where this is
the case, this user must have appropriate authorization on the resources used by the PLT programs.