Applies to ONTAP 9.7 ONTAP 9.8 Issue Initiation of takeover fails while upgrading ONTAP to target version: Error: command failed: Failed to initiate takeover. Reason: Requested operation is not suppor...Applies to ONTAP 9.7 ONTAP 9.8 Issue Initiation of takeover fails while upgrading ONTAP to target version: Error: command failed: Failed to initiate takeover. Reason: Requested operation is not supported by Data ONTAP 9.7P5 running on the target node <nodename> Some nodes already upgraded and rebooted to run the target version.