openrtb.2.5.macro.loss

What it means

OpenRTB 2.5 introduced macro.${AUCTION_MBR}, macro.${AUCTION_LOSS}, which openRTB 2.5 added auction minimum-bid and loss-notice macros..

Why it matters

macro.${AUCTION_MBR} 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 macro.${AUCTION_MBR}, 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 4.4
• Source: OpenRTB 2.6 Appendix B: Version 2.4 to 2.5

Back to the full rule catalog.