RACF Security Administrator Response

Or user Response:

Check for additional messages that provide further details, such as ICH428I. Verify that the first program executed in this execution environment (jobstep, or specified on TSOEXEC command or by way of IKJEFTSR service) has a specific PROGRAM profile that specifies the MAIN attribute. If not, redefine the program to have MAIN, if it is a program that you trust to maintain the environment properly for using conditional access, or change the way you invoke the program (for example, under TSO consider invoking the program by way of the TSOEXEC command), or change the system to run in BASIC PGMSECURITY mode, or define the program as one that needs BASIC PGMSECURITY mode by defining it with a specific PROGRAM profile that has an APPLDATA value of BASIC. Using a PROGRAM profile with BASIC provides less security, but might be necessary for some programs where you cannot use TSOEXEC.