Hello guys,
just got this message from Facebook regarding “Add to Cart” Event:
“Your server is sending an invalid user_agent parameters value for your AddToCart event. This may be because there was an error in the parameter value.
This may cause issues with the attribution and delivery optimization of ad campaigns that are using this event.
Check that you’re sending valid and unique values for the user_agent parameters for your AddToCart event and that the data is normalized correctly.”
Can you help me on this?
Thanks, Mattia