DAJ429E The subsystem ID entered could not be verified against the Control File

Explanation
Db2 Automation Expert is unable to verify that the selected Db2
subsystem is defined in the DB2PARMS VSAM control
file. Your user ID must have sufficient RACF® authority to
read this data set.

User response
Verify that your user ID has read authority to the Db2 Automation Expert control file.