--- title: "Campaign attribution referrer" slug: "24-campaign-attribution-referrer" updated: 2026-11-02T18:41:02Z published: 2026-11-02T18:33:38Z canonical: "docs.thebigpos.com/24-campaign-attribution-referrer" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.thebigpos.com/llms.txt > Use this file to discover all available pages before exploring further. # Campaign attribution referrer Track which campaign produced a loan by adding a `referrer` parameter to the application link you distribute. No configuration is required. ## How to use it Append `?referrer=your-campaign-name` to any application link. Example: `https://apply.yourdomain.com/apply?referrer=spring-open-house` ## What happens - **Captured from the link** — the value is recorded when the application is submitted, and survives the sign-in and account-creation steps along the way. - **One less question for the borrower** — when the link already carries a referrer, the application skips its referrer question. - **Carried into Encompass** — written to the loan in Encompass (field 1822) on sync, so reporting there sees it too. ## The value is permanent The first value a loan receives is the one it keeps. A later edit to the loan cannot overwrite or clear it, and an inbound sync from Encompass cannot replace it. **Treat the campaign name as final when you publish a link.** A typo in a distributed link cannot be corrected after applications start arriving against it. ## Naming suggestions Use lowercase with hyphens, keep names short, and agree a convention before the first campaign goes out — since values cannot be changed later, consistency has to come from the naming rather than cleanup.