501 Incorrect slot

Explanation
The node canister has saved cluster information,
which indicates that the canister is not located
in the expected enclosure, but in a different slot from where it was
previously used. Using the node canister in this state might mean
that hosts are not able to connect correctly. 

User response
Follow troubleshooting procedures to relocate
the node canister to the correct location.
Follow the Procedure: Getting node canister
and system information using the service assistant task to review
the node canister saved location information and the status of the
other node canister in the enclosure (the partner canister). If the
node canister has been inadvertently swapped, the other node canister
will have the same error. 

If the canisters have been swapped, use the Replacing
a node canister procedure to swap the canisters. The system should
start.

If the partner canister is in candidate state, use the hardware
remove and replace canister procedure to swap the canisters. The system
should start.

If the partner canister is in active state, it is
running the cluster on this enclosure and has replaced the original
use of this canister. Follow the Procedure: Removing system data
from a node canister task to remove cluster data from this node
canister. The node canister will then become active in the cluster
in its current slot. 

If the partner canister is in service state, review its node error to determine the correct
action. Generally, you will fix the errors reported on the partner node in priority order, and
review the situation again after each change. If you have to replace the partner canister with a new
one, you should move this canister back to the correct location at the same time.

Possible Cause-FRUs or other:

None