Pre migration script fails to run

Hi all, hopefully this is the right forum.  I’m migrating to VMWare and trying to execute a pre-migration script on the source zvm server.  We are already successfully executing a post migration script on the DR ZVM server.  I have confirmed execution policy is set correctly and running the script as the service account runs fine.  I ran the diagnostics utility, but didn’t see my vpg in the list to choose from.  Could you please point me in the right direction for troubleshooting?  Thanks!