How can I activate the button Inspection Data in Inspection processing?

Hello, Can someone help me knowing how can I access the button Inspection Data in the menu Inspection Processing? it’s grayed out:

Do you have an inspection plan?
From field help

Inspection Data…
Click this button to search for existing records. This search program retrieves the record type displayed on the button label.
Use this button to start the Inspection Results Entry process. On return the NCM is updated with the passed quantity and the failed quantity.This button is disabled if the part does not have an inspection plan and specification defined.