OASIS Subcommittee Report to the NAESB Executive Committee March 2019 – Phoenix, AZ 2019 Annual Plan Items 3b and 3f (formerly 2018 API 3c and 3h) 3b: Notification for the Rollover Rights Renewal Deadline (PTP) 3f: Removal of HTTP Notification and establishment of a generic e-mail structure 3/26/2019

API 3b/3f Notification event types: On any new or updated PTP request of reservation on a company-side basis or on a request/reservation basis (Commonly referred to as status notification). When any request associated with a given NITS Application is updated by the Eligible Customer or Transmission Customer or the Transmission Provider (Commonly referred to as status notification). To the Reseller of any request for scheduling rights by a Transmission Customer To the Seller of any new or updated ancillary service request or reservation for the ancillary service(s) offered by the Seller Where the registered company is identified as a party to any of the transactions identified in the Preemption-ROFR Process When the renewal deadline for a PTP reservation is approaching 3/26/2019

API 3b/3f Only e-mail notifications – no longer requiring TP to support HTTP notifications Single registration per company May register multiple e-mails for each type of notification May alter registration information Renewal notifications May exclude a specific reservation from being issued notifications May specify lead time for initial notifications May specify frequency for reissuance of renewal notifications. 3/26/2019

API 3b/3f Formal comments were received from 6 entities. OASIS subcommittee late comments address the formal comments by making minor changes to the original recommendation. 3/26/2019