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prebid / Prebid.js

Setup and manage header bidding advertising partners without writing code or confusing line items. Prebid.js is open source and free.
https://docs.prebid.org
Apache License 2.0
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Discrepancies in impressions #1242

Closed tshaked closed 6 years ago

tshaked commented 7 years ago

Hi There, We've noticed discrepancies in impressions in specific bidders (all the rest are ok)(bidders with discrepancies -springserve,districtm) prebid version - v.0.20.0 The numbers vary between 15%-25%. The discrepancy is found only in desktop and not in mobile or tablet. So probably it's not time zone issue. Any ideas for this problem?

Thanks!

matthewlane commented 7 years ago

1130 fixed certain cases of discrepancies and was released in v0.22.2. Are you able to test with this version or newer and measure a change in numbers for those bidders?

headerbidding commented 7 years ago

I am getting a 19% impression discrepancy and a 18% revenue discrepancy with bRealtime using v 0.22.2 - 0.24.1.
bRealtime suggests to "reach out to prebid.js" since "we have limited transparency when it’s not our technology."

mkendall07 commented 7 years ago

Discrepancy seem to increase with refreshing bids. You should only refresh bids that you can reasonably know that you can display.

headerbidding commented 7 years ago

I don't believe I am refreshing bids. This is my ad code: http://www.flixxy.com/prebid.htm Also, there are no discrepancies with AOL, Conversant and Sekindo. For now I am using bidCPMadjustment as a temporary solution. I have confirmed with bReatime that they are sending net bids.

headerbidding commented 7 years ago

We are still seeing the 20% impression discrepancies in version 28, but only with the brealtime / appnexus adapter.

headerbidding commented 7 years ago

We are still seeing the 20% impression discrepancies (and 25% revenue discrepancies) in version 31 with the brealtime / appnexus alias. Appnexus support has been investigating (via bRealtime) for over a week now, but no success so far... This has been going on for 18 months - since we started with prebid.js

headerbidding commented 6 years ago

bRealtime 20% impression discrepancies (and 25% revenue discrepancies) still exist in version 0.33.0 bRealtime has been in touch with Appnexus support since over one month. We have given Appnexus support read access to our DFP. Issue has not been resolved yet.

mkendall07 commented 6 years ago

hey @headerbidding - it's better to work with each ssp directly to resolve issues. I'm going to close this out.

headerbidding commented 6 years ago

@mkendall07 UPDATE: Appnexus Support has been working on this for 6 weeks now (with access to our DFP and Google Analytics Account) and still has not figured it out...