Request for Clarification on OpenRTB PMP Implementation

[Omer Chananel]

Hello,

Our team is implementing Private Marketplace (PMP) deals using the OpenRTB protocol, and we're facing some confusion regarding proper field mapping.

Based on our documentation, we need to add:

1. exchange_deal_type field
2. deals[].id field to our response

We planned to populate these as follows:

• exchange_deal_type with BidRequest.imp.pmp.deals.ext.deal_type
• deals[].id with BidRequest.imp.pmp.deals.id

However, our engineer has raised a concern that the OpenRTB protocol doesn't support a pmp object in the BidResponse. When reviewing example bid responses, I've noticed there's no pmp object present, and the deal ID isn't being passed—only the billing_id is included.

Could you please clarify what is the correct way to include deal information in BidResponses according to the OpenRTB specification?

Thank you for your assistance.

Omer

[Authorized Buyers API Forum Advisor]

Hello Omer,

I would recommend using the OpenRTB migration guide as a source for field mappings; for example, the reference table for AdSlot shows that Google RTB's deal_id field maps to OpenRTB's BidResponse.seatbid.bid.dealid field. Likewise, it shows that Google RTB's exchange_deal_type field maps to OpenRTB's BidResponse.seatbid.bid.ext.exchange_deal_type field.

That said, I was a bit perplexed about how you came to think a Pmp object exists in the response. I see that there's a section of our response guide that seems related. That is incorrect, and I will file a bug to have that corrected.

Feel free to reach out if you happen to have other technical API questions I can assist with.

Thanks,
 

Mark Saniscalchi Authorized Buyers API Team

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[2025-03-26 22:07:33Z GMT] This message is in relation to case "ref:!00D1U01174p.!5004Q02vHCoW:ref" (ADR-00296694)

[Omer Chananel]

Thanks for the clarification, it makes much more sense now. 

Omer

[Omer Chananel]

One last question -

We noticed this paragraph: https://developers.google.com/authorized-buyers/rtb/openrtb-migration/bid-request#matchingaddata

• The BidRequest.imp.ext.billing_id extension field represents the billing IDs of any eligible buyers and pretargeting configurations. The BidRequest.imp.pmp.deal.ext.billing_id extension field represents eligible buyers for each deal. You must include the billing ID you intend to bid on behalf of in the bid response if the bid request contains more than one billing ID. In cases where only one billing ID is in the bid request, you don't need to include it in the bid response.

I wanted to ask with which billing_id we should respond (on BidResponse.seatbid.bid.ext.billing_id) in case we have multiple id's (on BidRequest.imp.pmp.deals.ext.billing_id)

Thanks!
Omer