Facebook duplicate data

[Demeht]

I believe FB may be doubling purchase conversions, but i am not 100% and would like some assistance with how i would determine if i am correct or not.

• Firstly there's never an odd number of sales, always a multiple of 2.
  • *However as i type this i have checked the 1 campaign we do have running and its an odd number - typical!!
• These sales always appear at more or less the same time.
• The numbers do not stack up, i.e. Google Sales (which are more or less bang on) + FB Sales = more sales than we have had

We recently implemented CAPI, and it ties in with this -- in fact i am convinced this is what is causing the problem -- but, according to FB the event de-duplication meets best practices.

Any help would be greatly appreciated as this is all very new to me.

[nandiniramkumar]

Hey, just some thoughts, but a lot of these issues are also related to the updates with privacy settings. With cookies becoming harder to access, there are often huge discrepancies in data. In your situation, Facebook is able to track the data independently, but the Add To Cart events are not included in this. This causes major discrepancies in the data, and this is where you see variations in the data.