surime72 wrote:may be the above message related to in the spool it showing as IBM1936I S Invocation of compiler backend ended abnormally
we are not using any jcl to compile to increase region pararmeter
ISPF Option 5 will generate JCL in a temporary data set. Check for data sets your-tso-prefix.SPFTEMPn.CNTL; one of these (you may only have one) will be the JCL so generated. Add REGION=0K to the EXEC card of the compile step.