openrtb.2.5.bidrequest.bseat_wlang

What it means

OpenRTB 2.5 introduced bidrequest.bseat, bidrequest.wlang, which openRTB 2.5 added buyer seat blocking and creative language allow-listing on the bid request..

Why it matters

bidrequest.bseat is only defined from 2.5 onward. Used against an earlier version it is not valid, and a consumer below 2.5 treats it as an unknown field.

How to fix it

Target OpenRTB 2.5 or later when you send bidrequest.bseat, 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 2.5 to see whether this rule fires against your payload.

Reference

• Specification section: Section 3.2.1
• Source: OpenRTB 2.6 Appendix B: Version 2.4 to 2.5

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