SAP API Update 2026: New Standards For Procurement Systems

Chief Supply Chain Officers now face questions about transparency and compliance timelines following SAP's release of its new API Policy.

Supply chain organisations have been linking SAP to visibility platforms, demand planning tools and carrier networks for years. Previously, connections were made to any system that functioned, but SAP's new API policy raises questions about how many legacy systems meet current standards.

The v4/2026 policy standardises application programming interface use across all SAP environments. This represents a fundamental shift in how procurement teams can connect their purchasing systems to external platforms and supplier databases.

Published APIs become mandatory

API Policy v4/2026 means only published APIs can be consumed. Internal, private or non-published APIs are no longer permitted.

APIs which are not published and listed on SAP Business Accelerator Hub could be changed or removed by SAP without notice. The policy explicitly prohibits API use for interaction with third-party agents unless the interaction has been routed through SAP-endorsed models.

Leaders are questioning how much of their supply chain landscape would hold up during an audit. Many are assessing whether upgrades need to take place across their procurement estates, particularly within purchase-to-pay workflows and supplier onboarding systems.

The policy covers non-published APIs, including RFC calls, BAPIs and routes, which have formed the backbone of many supply chain data flows. Third-party AI tools applied to SAP data need to be reviewed against the new policy. Procurement automation platforms that extract invoice data, supplier performance metrics or contract information may require reconfiguration.

Organisations using SAP Ariba alongside core ERP systems must verify that all connections between these platforms comply with the published API requirements. Catalogue management systems and spend analytics tools could also be affected.

Procurement leaders voice concerns

According to the German-Speaking SAP User Group (DSAG), the policy limits customer innovation. Jens Hungershausen, DSAG Chairman, explains the implications for procurement systems.

"For SAP-to-non-SAP scenarios, this means that reliable support is only available where SAP has explicitly published and documented the underlying interfaces," says Jens.

Customers are seeking clarity on reliable frameworks and impact assessments. Businesses are concerned about impacts on supply chains, particularly procurement operations built years ago when regulations were thinner and published APIs had less availability.

Leaders are demanding transparency regarding pricing models, as SAP's policy aims for a fair-use model. Customers need clarity as they adapt to the new policy, especially to avoid legal vulnerability during transition periods.

Companies changing their API status need to avoid service interruptions and legal risks while maintaining innovation capacity and compliance. Procurement departments cannot afford downtime in supplier payment systems or purchase order processing during remediation work.

Supplier network implications

"The question is which interfaces are used in the partner solutions," explains Jens.

"That is why it is essential that SAP grants customers more time for the transition."

Global companies like Maersk and Nestlé have integrated SAP into their ecosystems across expansive networks. Maersk has been using SAP S/4HANA to improve, standardise and automate global logistics operations.

Much of this integration took place before the SAP policy. The company needs to examine its integration estate to understand whether it meets SAP's regulations, particularly connections between procurement modules and freight management systems.

Nestlé has one of the biggest SAP environments in the fast-moving consumer goods (FMCG) sector, applied across procurement, manufacturing and distribution. The company connects SAP to third-party demand planning systems and external logistics partners.

Supplier portals that allow vendors to submit invoices, update catalogue pricing or check payment status may rely on non-published APIs. These touchpoints are critical for maintaining supplier relationships and ensuring procurement efficiency.

Compliance audit requirements

The network could include non-compliant integrations. Nestlé may need to undergo a remediation programme and prepare for disruption during this period.

Ricardo Resendiz, Specialist Senior (SAP Development) at Deloitte, outlines the action procurement teams should take. "It's time to play by the official rulebook," says Ricardo.

"If your company relies on custom-built integrations or third-party software connecting to SAP, a quick audit to ensure you are only using official APIs is highly recommended to prevent surprise breakages down the line."

Procurement teams should inventory all system connections, identify which APIs are in use and map them against SAP's published documentation. This audit should include connections to e-procurement platforms, supplier relationship management tools and contract lifecycle management systems.

For businesses of all sizes, this new policy could mean disruption across procurement operations and supplier connectivity. The transition period requires careful planning to maintain business continuity while achieving compliance.