We provide a document with a detailed list of permissions required for each discovery/integration job on the interactive help.
UCMDB > Help > Discovery and Integrations Content Help > Discovery and Integration Content Permissions
I am attaching a document for permissions on CP 12.
For example on windows boxes depending on the job, you would need permissions to read the registry, execute a command remotely, query WMI, etc. With the document provided if you are not using admin account, you would need to modify the credentials until the test is successful.
If you find this or any post resolves your issue, please be sure to mark it as an accepted solution."