The "GRPID ==>" field was added to the Deliver Report Definition panel, where you can specify a 1- to 8-character GROUPID to customize a report's output for archival.
Only valid on JES2 systems, the GROUPID parameter is used in a JCL "// OUTPUT " statement to specify that a sysout data set belongs to an output group, where the data sets in that group would be processed together, as the report
outputs would share similar characteristics (output class, destination, process mode, and external writer name).
When an archival copy of the report is sent to a View FSS collector (having been defined with RMOPARM ARCHnn=c/dest/form/m/prmode), the GROUPID name identifies the member name in the SARFSS task SARINDEX data set
(//SARINDEX DD DSN=...) which contains the archive control statements for the report.