All supported DX NetOps Performance Management releases
To many retired items for the remove_not_present_items.sh script to work with.
Use the deleteAllDevicesInFile.pl and deleteRetiredItemsInFile.pl scripts to remove the retired items.
After the retired items are removed, regular runs of the remove_not_present_items.sh should function normally to keep the system clean.
If too many items build up in a short time, or over time without runs of the remove_not_present_items.sh, these scripts might be needed again.
How to use the deleteRetiredItemsInFile.pl script is documented in the How to delete Retired Items in Performance Management Knowledge Base Article.