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Notice
Summary
ASX will conduct a business continuity plan test (BCP) in the ASX Trade production environment on Saturday 18 October 2025.
This BCP event will simulate a complete ASX Trade failover from the ASX Liquidity Centre (ALC) to the Secondary Data Centre (SDC) and a subsequent Done for Day simulation with the opportunity for participants to retrieve ODS/TDS files.
ALC customer equipment and all connectivity products which do not interface directly with ASX Trade Services will not be impacted.
The test period will be from 09:00 to 14:00 AEDT on Saturday 18 October 2025.
Registrations required by Friday 10 October 2025 to confirm participation in the test.
Participants are required to submit a Declaration of Participation Form following the event.
Notice Content
The event on Saturday 18 October 2025 will be the second BCP event this year for ASX Trade and will simulate a complete ASX Trade failover of the ASX Liquidity Centre (ALC) over to the Secondary Data Centre (SDC) and a Done for Day scenario. All ALC services via Liquidity Cross Connect (LCC), Redundant Teamed Connection (RTC) and Gateway-in-Cabinet (GiC) will be unavailable.
It will enable Participants an opportunity for BCP testing to develop test cases to practice recovery strategies or switching to alternative arrangements for critical dependencies.
The test period will be from 09:00 to 14:00 AEDT on Saturday 18 October 2025.
ASX requests and expects that all Participants attend the two scheduled BCP events each year. Vendors and AMOs will also be strongly encouraged to participate in all BCP events.
What do I need to do by when?
Registration
Complete the Participant registration form and return to ASX Customer Technical Support (CTS) by close of business Friday 10 October 2025. Registrations will not be accepted beyond this date.
Participants need to specify ASX Net and ALC gateway connectivity details that will be used in the test, because other access points will be disabled by ASX.
Participants must liaise with their vendors prior to the test to ensure readiness.
Test Information and Conditions
During the test the ASX TradeMatch and ASX Centre Point order books will be opened for transactional activity.
ASX will generate a synthetic background load to support Participant testing. The load is targeted towards specific symbols. Subject to change, the symbol list is planned to cover "AMC, ANZ, BHP, BXB, CBA, CSL, FMG, MQG, NAB, NEM, RIO, RMD, STO, TCL, TLS, WBC, WDS, WES, WOW and XYZ". Participants are also encouraged to test and validate beyond the subset of symbols listed.
Long orders in the system on Friday 17 October will be restored in ASX Trade on Saturday 18 October. ASX will cancel any existing Undisclosed and Iceberg orders prior to market open. All orders will be restored to the expected state for Monday 20 October.
Access to the ASX Trade ITCH and OUCH services will be enabled for the test. ITCH and OUCH Participants not joining the test should ensure their sessions remain disconnected after the ASX Trade system shutdown at 20:30 AEDT on Friday 17 October until the conclusion of testing on Saturday and the rollback is completed ready for Monday 20 October.
The test is limited to ASX Trade connections for order entry and execution; there will be no access provided to CHESS or Signal B.
The trading date for transactions performed during the test will be Saturday 18 October 2025.
User configuration changes made during the test, including password changes, will be rolled back at the end of the test and will not be available in production on Monday 20 October 2025.
Transactions performed on Saturday 18 October will not be available on ASX Trade on Monday 20 October. Participants and vendors need to remove 18 October transactions from their applications on completion of the test.
Testing Schedule
For the purpose of this test and to better simulate an incident scenario, all times are approximate and may be subject to change on the day. Events will be published in real time via the System Status Page, Participants should monitor this page through the test for all updates.
A schedule of session state changes is published in Appendix 2 – session state changes of this notice.
| Time | Requirement |
| 09:00 | ASX Trade logins enabled - connectivity window commences. Markets in PRE_OPEN and ASX-production like generated order activity will begin. Users may enter and modify orders during the PRE_OPEN trading state |
| 09:30 | Markets move into OPEN Participants are required to enter orders and trades throughout the OPEN session state. This will ensure each participant has a number of test order and trades in the ODS and TDS files. |
10:10
|
ASX will simulate a complete outage of ASX Trade services in the ALC. SDC Available Services Services to SDC are available via ASX Net and ASX Net Global only. Customer applications establishing a connection to SDC should perform normal startup routines and listen for session state changes. Transactions will be rejected at this time.
ALC Unavailable Services All ALC services via Liquidity Cross Connect (LCC), Redundant Teamed Connection (RTC) and Gateway-in-Cabinet (GiC) will be unavailable.
|
11:10
|
SDC ASX trading services will be become available.
|
11:25
|
Market state changes following Matching Engine failovers.
|
| 11:45 | Markets move into OPEN from SDC. Participants are required to enter orders and trades throughout the OPEN session state. This will ensure each participant has a number of test order and trades in the ODS and TDS files. |
| 12:30 | Markets move into ENQUIRE. Participants are reminded that cancel on disconnect functionality is not supported during ENQUIRE and that all users should remain connected throughout the incident simulation. |
| Events to be communicated in real-time via the System Status Page. | ASX to conduct a Market Closure Assessment (done for day). |
ASX to confirm the market will not re-open (done for day). ASX will commence the generation of the ODS and TDS files. |
|
ODS and TDS files will be made available for Participants to collect and validate via the SFTP server. Participants exclusively using third party provider infrastructure can obtain ODS/TDS files manually by sending a request from an Authorised Signatory to tradingoperations@asx.com.au. Further information on the ODS/TDS service can be found here. |
|
Subsequent ‘Post-FOT’ TDS files will be made available flagging any trades that have been determined as ‘will not stand’ following an FOT assessment by ASX Operations. Participants exclusively using third party provider infrastructure can obtain TDS files manually by sending a request from an Authorised Signatory to tradingoperations@asx.com.au. Further information on the ODS/TDS service can be found here.. |
|
Markets move to CANCEL_ONLY. Participants to test cancelling orders during CANCEL_ONLY session state. |
|
| Markets move to PURGE ORDERS. | |
| Markets move to SYSTEM MAINTENANCE. | |
| Markets move to CLOSE. | |
| 14:00 | Logins disabled Stop ASX Trade and commence rollback Testing complete |
Confirmation and Declaration
On completion of the BCP test, Participants must email CTS their test status, advising of either a successful completion or a list of outstanding issues. Confirmations can be sent as soon as these scenarios have ben communicated as completed on the day, but should be sent by no later than 14:00 AEDT.
Participants are required to declare their attendance and participation in the BCP test following the event via a Declaration of Participation Form – Appendix 3, to Customer Technical Support (CTS) by close of business Friday 31 October 2025.
Need more information?
Issued by
Ben Jackson - General Manager, Market Operations
Contact information
Customer Technical Support cts@asx.com.au | 1800 663 053 | +612 9227 0372