| This notice addresses the following key topics: � Postponement of the ACS implementation Until January 31st � ACS Implementation Seminars on January 14th and 15th � GUS-API Trade ID Sequence Number Range Change on January 31st ACS Implementation The ACS implementation has been postponed until Friday, January 31st to provide additional testing time for those firms that have not completed their conversion from GUS batch files to GUS-MQM (API-formatted) TREX messages. Additionally, the CME intends to offer two full days -- Tuesday and Wednesday, January 21st and 22nd -- for firms to access our test environment for the purpose of generating ACS allocation and claim messages. These test dates are critical for firms to practice their access to the new ACS screens, to test their ability to generate and load the API-formatted bookkeeping messages, and to ensure their ability to utilize the allocate and claim API message formats. Refresher training classes will be conducted during the next three weeks to accommodate all GUS personnel that need additional ACS training. ACS Implementation Seminars The CME will host two seminars next week to explain the specific requirements and expectations for final ACS testing and the ACS implementation. Clearing House and IT staff will also be available to answer any last-minute questions firms may have regarding this new application. The seminars will be held in the CME Auditorium on Tuesday, January 14, from 9:00 � 10:00 a.m. and on Wednesday, January 15, from 1:30 � 2:30 p.m. We strongly recommend that all firms send their appropriate business and IT staff to one of these seminars. It is our expectation that the implementation postponement and testing period will ensure a �seamless� ACS implementation. GUS-API Trade Id Sequence Range Change As previously announced, the Trade ID sequence numbers shown on the TREX records for all GUS-API transactions (positions 140-145 on the main block), will be assigned a new 6-digit range of 500001 to 999999 . Please note that the field length will not change, only the sequence number range. The APS/GUS Group field (positions 163 -173) will continue to contain only five significant digits, (i.e. 00001 to 99999). The following chart illustrates the revised range of Trade ID sequence numbers: Range | Transaction | New Range | 1 - 49,999 | Firm assignment | 1-49,999 | 50,000 - 64,999 | CME assigned for TREX | 50,000 - 64,999 | 65,000 - 65,999 | FLEX Products System | 65,000 - 65,999 | 66,000 - 69,999 | C21 EFP Trade Entry System | 66,000 - 69,999 | 70,000 - 96,999 | Reserved for future use | 70,000 - 96,999 | 97,000- 97,999 | SIMEX | 97,000- 97,999 | 98,000 - 99,999 | GLOBEX APS | 98,000 � 99,999 | 100,000 - 999,999 | GLOBEX trade, GLOBEX GUS | 100,000 �500,000 | | GUS-API | 500,001 � 999,999 |
If you have questions, please contact Client Management Operations at 312-930-8159. Thank you! |
