openrtb.2.3.1.user.buyeruid

What it means

user.buyuid was corrected in OpenRTB 2.3.1.

OpenRTB 2.3.1 corrected the buyer-specific user ID attribute spelling to buyeruid.

Why it matters

Earlier spellings or targets of this field do not match what 2.3.1 consumers expect, so the value is not read correctly.

How to fix it

Use the corrected path user.buyeruid.

Paste your bid request into the tester and select OpenRTB 2.3.1 to see whether this rule fires against your payload.

Reference

• Specification section: Section 3.2.13 typo fix
• Source: IAB Tech Lab OpenRTB standards page

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