ExpectedBeneficiaryOrigin

Sign with the key or origin that owns the target object, then retry

A lease operation such as terminating a subnet lease was signed by an account other than the lease's beneficiary coldkey. Check the beneficiary recorded in the SubnetLeases storage for the lease id and sign with that coldkey.

Declared by the SubtensorModule pallet; it classifies to the semantic code not_authorized.

Remediation

Sign with the key or origin that owns the target object, then retry

The same explanation is available in the terminal: btcli explain ExpectedBeneficiaryOrigin.