You must copy the key from the source server to the target server before you migrate data using the configcopy tool.
Note:
As of PingFederate 10.2, the configcopy tool has been deprecated and will be removed in a future release.
To copy the key from the source to the target server, you copy the needed keys from the pf.jwk file on the source server and append it to the last key in the pf.jwk file on the target server, and then restart that target server. This step only needs to be completed before the first migration.