Check this against the same date range, traffic segment and business definition used elsewhere in the analysis.
First click attribution
A direct answer to first click attribution, including the measurements to check, the setup required, common mistakes and the next action to take.
First click attribution gives conversion credit to the earliest known marketing interaction. It is useful for acquisition questions and does not describe every influence that followed. Check first known source, converting session source, assisted touchpoints. Keep traffic, leads and revenue separate so one number does not hide a weak customer journey.
What you need to know
Use the term according to its exact scope. Keep it separate from related metrics so reports do not combine different business questions into one label.
For this issue, check first known source, converting session source, assisted touchpoints.
What to measure
Use the smallest group of metrics that can answer the question. A larger report is not automatically a better report.
Check this against the same date range, traffic segment and business definition used elsewhere in the analysis.
Check this against the same date range, traffic segment and business definition used elsewhere in the analysis.
Check this against the same date range, traffic segment and business definition used elsewhere in the analysis.
Check this against the same date range, traffic segment and business definition used elsewhere in the analysis.
How to build or diagnose it
Follow the evidence in order. Changing several tracking layers at the same time makes it harder to prove which change fixed the problem.
- Preserve first touch and session touchpoints separately
- Standardize campaign tagging
- Attach acquisition data to the lead
- Carry stable identifiers into CRM, proposal, invoice or payment records
What commonly goes wrong
These are recurring causes of misleading analytics, broken attribution and wasted implementation work.
Verify the underlying evidence before changing the reporting layer or drawing a commercial conclusion.
Verify the underlying evidence before changing the reporting layer or drawing a commercial conclusion.
Verify the underlying evidence before changing the reporting layer or drawing a commercial conclusion.
Verify the underlying evidence before changing the reporting layer or drawing a commercial conclusion.
How to read the result
Keep observation, interpretation and commercial action separate. That reduces false certainty and makes the next decision easier to defend.
Attribution is a rule for assigning credit
Different models answer different questions
A strong system exposes the underlying touchpoints as well as the chosen model
Frequently asked questions
Short answers to the next questions that usually follow this search.
How should this metric be used?
Use it for the specific question it was designed to answer and keep its scope visible. Do not compare it with another metric unless the definitions, date range and population are compatible.
Which measurements matter for first click attribution?
First known source, Converting session source, Assisted touchpoints, Lead source confidence. Choose the smallest set that answers the business question.
Can analytics prove every customer action?
No. Browser restrictions, consent choices, cross device behaviour, offline conversations and missing identifiers create gaps. A reliable report shows what is observed, what is inferred and what remains unknown.
When is specialist help useful?
Bring in help when the numbers cannot be reconciled with known business outcomes, several platforms report different results, advertising depends on the data, or the setup has become difficult to audit safely.
Check the platform settings
Use the vendor guides below when checking the settings discussed on this page.
Keep working through the measurement problem
These pages cover the next questions that usually arise around the same measurement problem.
Need the measurement fixed, built or verified?
DSDillon can audit the current setup, repair conversion evidence and connect website activity to leads and commercial outcomes.
Keep working through the issue
Related guides and services that can help you continue the diagnosis.
Explore more about First Click Attribution
Conversion evidence, lead tracking and commercially useful reporting.

