# Event registration source evidence — editable worksheet

Event / edition: ______  Reporting period and time zone: ______  Prepared by: ______  Version: ______

**Define the outcome:** [ ] event-page visits  [ ] completed registrations  [ ] orders  [ ] tickets  [ ] admitted attendees. Count one unit consistently. Record cancellations, refunds, complimentary admissions and multi-ticket orders separately when they matter.

| Channel / partner | Tagged link or source label | Website visits (system, period) | Completed action (system, unit, period) | Optional self-reported mentions | Missing or unverifiable share | Decision and owner |
|---|---|---|---|---|---|---|
| Newsletter | [exact UTM label] | [count; analytics property] | [count; ticketing or registration source] | [count or not asked] | [checkout boundary / consent / unknown] | [action; owner] |
| Partner | [exact partner link] | [count; analytics property] | [count only if traceable] | [count or not asked] | [untracked forwards / no order linkage] | [action; owner] |
| Direct / unknown | [not a proven channel] | [count] | [count only if available] | [count] | [why unknown] | [investigation; owner] |

## Measurement notes

- Source of truth for completed tickets or registrations: ______
- Does the website-to-checkout handoff preserve any campaign identifier in the actual configuration? ______
- Analytics attribution model and lookback period, if used: ______
- Voluntary self-report question and where its answers are stored, if used: ______
- Why totals cannot be reconciled exactly: ______
- Decision, evidence limit, owner and review date: ______

Do not put attendee identity, payment information or private ticket codes in a shared channel worksheet. A campaign credited by an attribution model is not a proven cause of every registration.