Hey,
Has anyone noticed conversion discrepancies between their tracker and Taboola? It's about 10-20% less on Taboola (closer to 20%), but still not ideal as otherwise Taboola would have more data to optimize from.
Tracker "Bemob" is firing postbacks successfully with status 204.
Never I had such discrepancies with other, much more simpler traffic sources yet Taboola is saying this is below the industry standard to be wrong. 
I'm getting the conversions to tracker and firing them to Taboola in real time.
My postback is looking like this to whom is wondering: https://trc.taboola.com/actions-handler/log/3/s2s-action?name=arb¤cy={payout.CURRENCY}&revenue ={payout}&click-id={externalId}
Any help would be appreciated 
I don't see this issue with Taboola at all. Sometimes there is the 2 hour lag for it to update on their dashboard, but it's always the right amount of conversions eventually.
Only thing I can think of is one of your macros is getting lost/butchered somewhere. If a clickID from Taboola gets fucked up somehow, it will never postback correctly.
What happens when you try to manually fire a conversion that was missed? Does it go through? Or is there some error code?
Interesting, usually I'm facing discrepancies with traffic figure but conversions ten to be more or less accurate.
In most cases when this happens it's a problem of a different time zone setup in the tracker and the source... are you sure you're checking the same time frame?
When you compare the conversion numbers from bemob with the affiliate network (or wherever the offer is from) do those numbers match?
The conversion discrepancy is pretty rare when using S2S postbacks.
However, judging from the postback conversion parameters, it could be the case that some of your conversions are coming from hosting/invalid clicks, therefore if Taboola doesn't charge you for those clicks and they are not included in the reports, then you won't see their conversions being reported.

For instance, in the above screenshot you can see that out of 2803 ad clicks / visits tracked on the tracker, 1122 of them are coming from hosting providers - invalid clicks.
If your conversions are coming from these clicks and not being reported on Taboola, just carry on and don't worry much about it.
The cause was found.
I had "accept double postbacks" enabled on my tracker.
And this was the response from Taboola after the investigation:
That's good to know, but what if you want to accept multiple conversions from one click id?
Not sure how arbitrage conversions work, but I have a few offers that have 'upsells' which use the same clickID and change the conversion amount to the last posted back amount.
Most of them are not within one minute, so I guess it wouldn't affect Taboola.
So. I guess. Nevermind 
But wondering how the arb postbacks are working. Is it cumulative, or is it updating the payout? If so, then Taboola stats will always be off and just deal with it?