CHESS Release 1 - Clearing

CHESS Release 1 - is now live!

CHESS Release 1 went live on 20 April 2026 and the Clearing Service continues to operate normally. You can find further information in the market announcement.

Next steps

• Confirmation that overnight and start-of-day activities have been completed (prior to market open on Wednesday 22 April 2026).
• Confirmation that Batch Settlement has been completed (Wednesday 22 April 2026).
• An end-of-week summary (Friday 24 April 2026).

If you have a question or need support, you can contact us by: 

• submitting an online request through 
  • ASXOnline.com 
    • Sign In > Ask ASX > Raise a Request and selecting CHESS Replacement for the Related Service
• emailing  CHESSreplacement@asx.com.au

A dedicated CHESS Project Customer Support Team is available between 9 am – 5 pm AEST/AEDT time, Monday – Friday on trading days.

Key documents

Specifications and rules

• CHESS Release 1 AMO User Technical Documentation  

Environments

• CHESS Release 1 Connectivity Guide
• CHESS Release 1 Environment Access Application Form
• CHESS Release 1 ITE Open Release Notes
• CHESS Release 1 AMO Readiness - Release Notes
• CHESS Release 1 Glossary
• CHESS Release 1 AMO Readiness July Patch Release Notes 
• CHESS Release 1 Subscriber Technical Access Agreement

Industry testing 

• CHESS Release 1 Industry Test Approach
• CHESS Release 1 AMO Operational Readiness Guide
• CHESS Release 1 AMO Operational Readiness Scenarios
• CHESS Release 1 AMO Accreditation Guide
• CHESS Release 1 AMO Accreditation Application Form
• CHESS Release 1 AMO Accreditation Scenarios
• CHESS Release 1 Clearing Regression Test Guide
• CHESS Release 1 Clearing Regression Release Notes
• CHESS Release 1 Clearing Regression Test Trade File Template
• CHESS Release 1 Clearing Regression Test Kit and SFTP Application Form
• CHESS Release 1 AMO Parallel Test Guide
• CHESS Release 1 AMO Parallel Test Release Notes 
• CHESS Release 1 Clearing Regression Patch 2 Release Notes
• CHESS Release 1 Known Issues Log 
• CHESS Release 1 FAQs

Go live

• CHESS Release 1 IDR1 Runbook
• CHESS Release 1 IDR2 Runbook
• CHESS Release 1 Cutover Runbook
• CHESS Release 1 Cutover Operating Model
• CHESS Project Release 1 Cutover Approach
• CHESS Release 1 Clearing Regression Phase Attestation
• CHESS Release 1 AMO Go-Live Readiness Attestation
• CHESS Release 1 Go-Live Release Notes

BAU

• ASX Settlement Procedure Guidelines
• CHESS External Interface Specifications