The parameter isn't required but it helps for more accurate tracking for edge cases where a user suddenly disables eg an event, goal or ecommerce plugin but still keeps sending these requests. If the parameter is not sent, Matomo would turn the tracking request into a page view and track a page view even though the tracking request should be ignored.
Let me know if there are any questions about this.
See https://github.com/matomo-org/matomo/issues/16569 to learn more about the problem it fixes and visit https://developer.matomo.org/api-reference/tracking-api for more documentation about the new
ca
parameter. Basically, we should be sending&ca=1
along any tracking request that isn't a page view. Practically, we should for now only send&ca=1
along any event and content tracking requests.The parameter isn't required but it helps for more accurate tracking for edge cases where a user suddenly disables eg an event, goal or ecommerce plugin but still keeps sending these requests. If the parameter is not sent, Matomo would turn the tracking request into a page view and track a page view even though the tracking request should be ignored.
Let me know if there are any questions about this.