I am having the same issue. I believe it is causing terrible reporting accuracy in Facebook Ads Manager (less than 50% of my purchases that I know are attributed to Facebook are being reported in Ads Manager). This is obviously a catastrophe for our ROAS and ultimately our sales. I hope Shopify presents a solution soon!
Updated! Yesterday I have contacted shopify online chat. They said I might have installed apps from the third party that tracks the data. I used to use trackify and I
uninstalled it 3 months ago. They said they will look into it and fix it for me. There were 7 errors yesterday and today I checked 4 error are fixed but there are still 3 errors left that need to be fixd. I believe
it is a shopify bugs. I urge everyone to contact shopify online chat to get the problem fixed as this seems like everyone is getting it.
Having the same issue. Just reached out to Shopify and got the following response: The screenshots you have provided me with confirm that what you are currently experiencing is an active issue that our developers are currently investigating to see what our default values for this are and if this is expected to be sent from Shopify's integration for conversion API. Once our team confirms this, we will be able to confirm if this falls under Shopify's scope of support. After we close this chat I will loop in our technical support team, and they will reach out to you via email as soon as they can with more information.
I got an update from the support, this is what they say so far. I will keep you updated:
"This is an update with regards the issue with your purchase event data which relates to the facebook error message that you've previously sent to my co-advisor. Our developers are currently investigating what our default values for this are and if this is expected to be sent from Shopify's integration for conversion API. Once they confirm this, they will be able to confirm if this falls under Shopify's scope of support
We've checked on your facebook setup and it was done correctly. In able to help with the investigation, you can confirm with us if you've connected the same Pixel ID to your Shopify and Facebook dashboards. You can confirm by sending us a screenshot of the fb error message showing your Pixel ID as well. If you have any custom code/scripts/Apps that implement the Pixel - it wouldn't part of our scope of support anymore.
About the marketing campaigns done outside your shopify admin, our technical team have confirmed that it's a known behavior as our marketing section would only show campaigns that were created within your shopify admin.
Surely, we'll monitor on your reply here so we can take further action with our developers and do our best to sort things out. :)"