Transitioning to S/4HANA

Transitioning to S/4HANA

What has changed?

INPEX has moved from SAP ECC to SAP S/4HANA. We went live on 1 November 2026.​

This change simplifies, standardises and improves the way we work.​

It also changes how supplier-related transactions are managed, including purchase orders (POs), goods receipts, service entry sheets, invoices, contracts and supplier master data.​

If you have questions or need help, please email [email protected].​

Recordings of our Supplier Information Sessions remain available under S/4HANA supplier resources.​

  • What to expect now we are live

     

    The transition period has ended. INPEX went live on SAP S/4HANA on 1 November 2026, following the blackout period from 25 to 31 October 2026.​

    During the blackout period:​

    • No system transactions were processed​
    • Emergency activity was managed through INPEX Business Continuity Plan processes​
    • Urgent business transactions were recorded manually​

    Those manual records are now being entered into SAP S/4HANA.​

    While we catch up, you may notice some delays in processing orders, invoices and payments. We appreciate your patience and understanding as we work through the stabilisation of our new SAP S/4HANA system.​

  • What suppliers need to do

    To help keep things running smoothly in SAP S/4HANA, please:​

    Use your new PO numbers​

    Some open POs now have new SAP S/4HANA PO numbers. Quote the new number on all invoices and correspondence sent to INPEX.​

    If you receive a new or updated PO:​

    • Update your internal systems and records​
    • Use the new PO number on future invoices and check PO details align with your records​
    • Do not use old PO numbers unless INPEX specifically instructs you to​
    • Contact INPEX promptly if details appear incorrect​

    Avoid duplicate invoices​

    Please do not resubmit invoices already sent. Duplicates cause processing delays, reconciliation issues and payment delays.​

    Respond promptly to INPEX data requests​

    We may still contact you to confirm supplier details such as bank or contact information. Prompt responses help keep our records accurate.​

  • What has not changed

    Business as usual​

    Our processes and the way you transact with INPEX continue. The freeze and cut-off dates that applied before go-live have now ended.​

    In SAP S/4HANA​

    Unless INPEX advises otherwise:​

    • Existing contractual obligations remain unchanged​
    • Commercial terms remain unchanged​
    • Supplier contacts remain unchanged​
    • Suppliers should continue to meet delivery and service obligations​

    The move to SAP S/4HANA changed the system and some transaction references. It does not change the goods or services you are contracted to provide.​

    ​

  • Key dates

    SAP S/4HANA went live on 1 November 2026. All pre-go-live freeze and cut-off dates are now complete.​

    Support after go-live​

    If you have a question about a PO, invoice or payment, please check the S/4HANA supplier FAQ first.​

    Still need help? Email [email protected].​

    To help us respond quickly, please include your supplier name, the PO number (new S/4HANA number if applicable) and the invoice number.

    ​

  • S/4HANA supplier resources

    These resources remain available to support you after go-live:​

    S/4HANA supplier FAQ

    S/4HANA Supplier Information Session - September 2026 

    S/4HANA Supplier Information Session - 11 August 2026

    S/4HANA Ariba Networking Processing Changes

    Can't find what you need? Email [email protected].​

INPEX is committed to recognising and respecting Aboriginal and Torres Strait Islander peoples whose cultures have existed in Australia for more than 65,000 years.

In particular, we acknowledge the Larrakia people as the recognised Traditional Owners of the land and waters where Ichthys LNG onshore facilities are located, in addition to the Whadjuk Nyoongar people on whose lands our Perth office is situated. Furthermore, Broome and Djarindjin are important logistical locations for transit of our offshore workforce, and we therefore extend our acknowledgement to the Yawuru, Bardi and Jawi peoples, respectively.

INPEX acknowledges the important role Aboriginal and Torres Strait Islander peoples continue to play in the development of our business in Australia and pay our respects to their Elders – past and present.