Pathway to Interoperability

Relationship between a property transaction & the “Workspace”
The most common property transaction in Australia is a Purchase and Sale, where a Vendor sells property to a Purchaser. These parties are represented by Lawyers or Conveyancers (“Practitioners”).
The majority of these transactions also involve Banks – a Discharging Mortgagee (Vendor’s side) and an Incoming Mortgagee (Purchaser’s side).
All four parties must co-ordinate and agree on key transaction details before lodgment and settlement, including:
- Settlement date and time
- Duty details (for the State Revenue Office)
- Land title documents (for the Land Registry)
- Financial settlement instructions (for the Financial Institutions + RBA)
This process is managed through ELN (Electronic Lodgment Network) platforms, which provides users a secure, shared online space – called a Workspace – to facilitate collaboration.
In the current state, all parties must use the same ELN platform to collaborate in the same Workspace.
Interoperability (IOP) enables parties to work together in the same Workspace, even if they use different ELN providers.
Current state for Transfers – PEXA monopoly and network effect
The entire industry is currently onboarded to PEXA due to regulatory mandates.
All parties, practitioners and banks, transact on PEXA, either through the PEXA web application or via integration.
This means that today, Lodgment and settlement are always processed through PEXA.
Even though Sympli has a platform which users can complete all transactions in NSW and QLD, customers are restricted by the number of subscribers on the network – and specifically banks willingness to multi-home
- Note: Requires both banks and practitioners to register PEXA

Non IOP approach – Entire industry must multi-home
All parties – practitioners and banks – must operate within either PEXA or Sympli, accessing the platform via web application or integration.
For a transaction to proceed, the entire industry must be onboarded to the same ELN.
Each ELN has its own lodgment and settlement services, which it uses to complete the settlement and lodgment process.
- Note: Not a reasonable ask of the industry to multi-home – doesn’t provide true customer choice
- Requires both banks and practitioners to register with each ELN, which means running dual processes, adding up front co-ordination effort to every transaction (“which ELN are we completing this transaction on?”) – and in some cases maintaining two separate digital certificates.

IOP – Direct Connect – Practitioner First approach
The Practitioner First Release of Interoperability will allow practitioner subscribers to choose between Sympli and PEXA, without being limited or disadvantaged by their subscriber network access.
Banks will continue to exclusively subscribe and use PEXA for all transactions, ensuring their existing user experience and processes are maintained until bank-related concerns are addressed in later releases.
Lodgment and settlement – including the movement of Trust Funds – will continue to occur through the PEXA system, which will remain the RELNO for all IOP transactions (as they represent the incoming mortgagee in the transaction).
- Note: Introduces the first phase of ELN industry resiliency and redundancy
- Practitioners will not need to register to both ELNs or maintain dual processes – they can choose and transact solely on one ELN if they wish
- We have only shown the Purchaser on Sympli in this example, but it could also be the Vendor or other practitioner roles
- This marks the first official release of IOP, replacing the current “Pilot Refinance” phase (previously known as “Release 1”)
- Practitioner first limits Sympli use for practitioners only – because of this, PEXA is RELNO to support the FIs.

Full IOP – direct connect model previously endorsed by ARNECC
- Full IOP – will allow banks to choose between Sympli and PEXA.
- Lodgment and settlement will occur through the RELNO, which may be either Sympli or PEXA
- Extended resiliency and redundancy
- Market resiliency – Reducing single point of failure.
Note: We have shown two examples below to explain how the ELN that hosts the Incoming Mortgagee becomes the RELNO and therefore will lodge and settle the workspace.


Frequently Asked Questions
The best way of understanding this is a retail-wholesale model where PEXA’s infrastructure will be used to settle property and Sympli can offer choice to lawyers and conveyancers in the workspace.
Any threat of impact to the existing user experience would be contrary to the Model Operating Requirements, and is the control of each ELN individually.
In this release the banks remain on PEXA and Sympli will open to the practitioner market, similar to a retail-wholesale model. We ultimately want full interoperability to give the market resilience, and to provide the banks choice in their ELN provider as well.