the parties do not appoint the Sole Arbitrator within the time limit referred to in

paragraph (1)

;

the parties notify the Secretary-General that they are unable to agree on the Sole Arbitrator; or

the appointee declines the appointment or does not comply with

Rule 83(1)

.

the Secretary-General shall transmit a list of five candidates for appointment as Sole Arbitrator to the parties within 10 days after the relevant event referred to in

paragraph (2)

;

each party may strike one name from the list and shall rank the remaining candidates in order of preference and transmit such ranking to the Secretary-General within 10 days after receipt of the list;

the Secretary-General shall inform the parties of the result of the rankings on the next business day after receipt of the rankings and shall appoint the candidate with the best ranking. If two or more candidates share the best ranking, the Secretary-General shall select one of them; and

if the selected candidate declines the appointment or does not comply with

Rule 83(1)

, the Secretary-General shall select the next highest-ranked candidate.