crr;operations;retail_operations_issues

5/23/19 3:08 PM

M-B032819-07 Reminder - Changes to programmatic access to ERCOT's External Web Services API


NOTICE DATE: May 23, 2019

NOTICE TYPE: M-B032819-07 Operations

SHORT DESCRIPTION: Reminder - Changes to programmatic access to ERCOT’s External Web Services API

INTENDED AUDIENCE: Market Participant personnel that administer programmatic access to ERCOT’s production and testing environments

DAYS AFFECTED: May 29, 2019

LONG DESCRIPTION: On May 29, 2019 at 3:30 PM CDT, ERCOT will implement a configuration change to ensure that External Web Services API communication from Market Participants into ERCOT’s production environment (MISAPI.ERCOT.COM and API.WAN.ERCOT.COM) is sent with a handshake-level, valid ERCOT issued Client Digital Certificate, and each message signed with a valid ERCOT issued Client Digital Certificate.

This change is currently configured in ERCOT’s Market Operations Testing Environment (MOTE) and Retail Market Testing Environment (RMTE) to allow Market Participants to test their systems prior to it being implemented in ERCOT’s production environment.

ERCOT’s MOTE and RMTE can be accessed through the following URLs.

·         (API) https://testmisapi.ercot.com

·         (WAN API) https://testmisapi.wan.ercot.com

Note that there is no impact to Market Participants that access the Market Information System (MIS) or other ERCOT websites through a web browser.

ACTION REQUIRED: Market Participants must ensure that all API communication into ERCOT’s production environment is sent with a handshake-level valid ERCOT issued Client Digital Certificate and each message signed with a valid ERCOT issued Client Digital Certificate on May 29, 2019 @ 3:30 PM CDT.

ERCOT’s MOTE/RMTE environment is currently configured to require this handshake-level validation using a Client Digital Certificate.

Please review the ERCOT website for previous Market Notices related to this subject. 

CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at ClientServices@ercot.com.

If you are receiving email from a public ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

 

mm