Are VSAM GDGs supported?  I created the GDG base using the JCL below and was 
able to create the first generation, but when I run that job again it tries to 
create generation 1 again, giving me a JCL error because the GDS already exists.


//DEFGDG   JOB ,'DEFINE AHI GDG

//DEFINE   EXEC PGM=IDCAMS

//SYSPRINT DD SYSOUT=*

//SYSIN    DD  *

 DELETE (PROD.CVSC.AHI.BKP)

 IF MAXCC LE 8 THEN SET MAXCC=0

DEFINE GDG ( -

     NAME(PROD.CVSC.AHI.BKP) -

     LIMIT(5) -

     SCRATCH -

 )


Thanks,

Frank

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