Final answer:
A representative from the relevant U.S. military service or a Department of Defense official is authorized to correct, change, or revoke a previous SBP election due to administrative error.
Step-by-step explanation:
The individual authorized to correct, change, or revoke any previous SBP (Survivor Benefit Plan) election in the event of an administrative error is typically a representative from the respective branch of the U.S. military service that administers the SBP or a designated official from the Department of Defense. This authority is often contained within the regulations and procedures governing military benefits and the SBP program specifically. If such an error is discovered, the service member, beneficiary, or an authorized representative should contact the appropriate military pay office or support center to address the correction.