After applying JCLCheck PTF SO00356, and using runtime option BYPRUNT(DSE) to bypass data set existence checking the following message is issued:
CAY6568W SYSUT1 DATASET LRECL IS ZERO WHEN BYPRUNT(DSE) IS SPECIFIED
The step ends with a condition code of 4.
Release : 12.0
PTF SO00356 made a change when checking IEBGENER DD statements and using option BYPRUNT(DSE) to bypass data set existence checking.
Message CAY6568W is issued as a warning to indicate that the DCB attributes of the SYSUT1 cannot be validated so it cannot guarantee that the copy will work correctly.
If this checking is not required then it is possible to change the severity of the message using either the MCOSYS or MCOUSR runtime options.
To change the CAY6568W message from a warning to informational with severity of 0, code the option MCOUSR(MCOUSR) and add the following DD to the JCL:
//MCOUSR DD *
568,00
/*
To suppress the CAY6568W message altogether, code:
//MCOUSR DD *
568,-1
/*