Facebook Pixel Error: Server External ID Not Matching to Pixel External ID for Purchase Event

6 0 7

Hi there,

I know this is more on the facebook site but i hope someone can help me since i am not getting the same data in shopify than i get in facebook for my ad campaigns.

The Facebook Pixel says there is this error on the purchase event:




Any ideas on how to fix this problem and if this is related to my facebook ads data not showing up correctly in the marketing section in my shopify account?


Replies 58 (58)
New Member
8 0 0

I do get sales, and no errors but checking data is almost impossible. Today out of 6 sales I only see 2 in FB ads manager. While UTM's show that all 6 came from Fb ads.

I assume if pixel sees only 2 sales then it doesn't take other 4 into the optimization.

I also checked operating system this sales came in, and Android sales also not being counted. 

New Member
1 0 0

Things seem to have gone quiet on this for a week or so now. I'm currently experiencing these issues too in event manager. Anyone have any updates?

New Member
3 0 0

Did this ever get resolved? It just seems like there are a lot of open tickets around this topic...

31 1 3

I just started having this issue this week

New Member
6 0 0

Hi, were you able to resolve this? Mine comes and goes away and then it finally came back and stayed that way.

5 0 1

Hi all,

I just started to have this problem yesterday.

If anyone has any updates please share.


New Member
1 0 0

I also got this error only today. Even though I had customer purchases and the purchase event detected them, I am not able to view this data in my ad campaign and it's difficult to attribute the purchases to a specific ad set!

I don't know if this is related to the error but I'm assuming it is.



is there an update on this issue?

33 1 8