The money always crosses a boundary somebody owns.

ROLLER splits a booking across surfaces your tag container was never installed on, so the purchase can be real, recorded by ROLLER, and invisible to the team running the ads.

BookingZone is a platform where a working setup can be diagnosed as broken because headless verification may not see it.

Leap360 confirms the sale without navigating anywhere, which defeats any conversion tag waiting for a thank-you page.

A CenterEdge implementation can depend on page markup, which means it can break silently when the checkout changes.

A party booking leaves the venue site partway through, and the handoff is where the campaign source can get lost.

Resova takes the booking on its own hosted flow, so the purchase and its value only reach your ad platforms if somebody configures that on purpose.

Acuity can sit either in an embed or on its own scheduling domain, and both arrangements can cut the line between the ad click and the booking.

The purchase completes inside a checkout the platform owns and sandboxes, so the tag that fires there cannot see your data layer and cannot be debugged the way every other tag on the site can.

A renewal is created by a scheduler rather than by a person, so there is no session and no campaign parameter anywhere near it, and every recurring order lands unattributed by construction.

The front end and the checkout are two different origins, so the identifier stored on the first one is not readable from the second, and the purchase lands as a new visitor unless identity is carried across deliberately.

Accepting an upsell after checkout either writes a second order or edits the first, and tracking installed for a single purchase event gets one of those two cases wrong in every implementation that has not decided which.

Adding server-side events on top of an existing browser pixel doubles every conversion unless both sides send the same event identifier, and the identifier is the part that gets skipped.

The campaign parameters exist in the browser and the record is created by a server, so unless the parameters are put into the submission on purpose they never make the trip and the lead lands with no origin.

The event that matters commercially happens inside the CRM days or weeks after the click, and unless it is sent back with an identifier that matches, the ad platform keeps optimising toward the only event it can see.

Both the automation platform and the CRM hold a source field, and whichever one writes last wins, so first touch is quietly replaced by the most recent interaction and the acquiring campaign disappears.

A booked meeting is the strongest intent signal in the funnel and it completes inside a widget somebody else owns, on a confirmation that never changes the URL a conversion tag is waiting for.

Browser storage is measured in weeks and a considered B2B purchase is measured in months, so the record of the first touch is routinely gone before the revenue it produced ever appears.