openrtb.2.3.native.assets

What it means

OpenRTB 2.3 introduced native.assets, which openRTB 2.3 allowed supply and demand to negotiate native asset availability and requirements in the bidstream..

Why it matters

native.assets is only defined from 2.3 onward. Used against an earlier version it is not valid, and a consumer below 2.3 treats it as an unknown field.

How to fix it

Target OpenRTB 2.3 or later when you send native.assets, and make sure the value matches the type and any enum the specification defines for it.

Paste your bid request into the tester and select OpenRTB 2.3 to see whether this rule fires against your payload.

Reference

• Specification section: Release highlights
• Source: IAB Tech Lab OpenRTB standards page

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