For the managed package runtime, to detect missing and duplicate global keys in the local files that have been exported, use the validateLocalData command.
This information is for Omnistudio for Managed Packages. For Omnistudio on standard runtime, see Omnistudio Help.
For best results, test the deployment directly in the org.
Another way to find potential issues is to see if recently deployed data matches what was just exported. To check the current local data against the data that exists in the org that you deployed to, run this command:
vlocity -propertyfile build_uat.properties -job Example.yaml packGetDiffs
This command provides a list of files that are different locally than in the org..