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Technology & Integration

OCI (Open Catalog Interface)

Also known as: OCI

OCI (Open Catalog Interface) is a catalogue integration standard, originally from SAP, used to connect a buyer's procurement system to a supplier's PunchOut catalogue.

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OCI performs a similar job to cXML: it defines how a buyer's system launches a punchout session to a supplier's catalogue and how the selected items are returned as a requisition. OCI is closely associated with SAP procurement environments, where it is the native punchout mechanism.

For a supplier, supporting both cXML and OCI maximises the range of buyer systems they can integrate with. The choice between them usually depends on which standard the buyer's e-procurement platform prefers.

Frequently asked questions

What is OCI in procurement?
OCI (Open Catalog Interface) is a catalogue integration standard, originally from SAP, that connects a buyer's procurement system to a supplier's punchout catalogue and returns selected items as a requisition.
What is the difference between OCI and cXML?
Both enable PunchOut. OCI is closely tied to SAP environments, while cXML is a broadly adopted cross-platform standard. Suppliers often support both to reach more buyers.

Go deeper

PunchOut guide: cXML & OCI

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Operating model · diagram

  1. 01

    AI-first software

    AI-first procurement software for long-tail spend

  2. 02

    Live marketplace

    A live B2B marketplace

  3. 03

    Human services

    Human sourcing and support

  4. 04

    Optional add-on

    Fulfilment support for merchants