How do I know my licenses in IDPA 4400 data protection?

A good place to start is by looking at the acm dashboard, which shows if the various components have valid licenses. (Sometimes issues such as password out of syn can prevent acm from pulling the licensing info into the dashboard.)

Additional licensing info, including how to add licenses post deployment, can be found here:

IDPA: How to manually apply licenses on IDPA Components like Avamar, Data Protection Advisor and Data Domain post IDPA Deployment:

https://www.dell.com/support/kbdoc/en-us/000158138/idpa-how-to-manually-apply-licenses-on-idpa-compo...

Your account records also list licenses purchased for various products.

If you have additional questions you can contact Dell Licensing as mentioned by Willman above.

If this is useful please give KUDOS.

thanks