We use SSH Tectia for our SSH connectivity. In my Jenkins job, i have provided the userid (destination) and the private keyfile (absolute path in the Source box). When i try to test the configuration it fails with the below exception

Failed to connect or change directory

jenkins.plugins.publish_over.BapPublisherException: Failed to add SSH key. Message [invalid privatekey: TheKey]

But the same connection id works through command prompt and i can see the keyfile is the same that i have provided.