TUNE parameter
What is the aff_id parameter?
aff_id is TUNE's your tune affiliate id. aff_id identifies you in TUNE-powered programs. Afterlink detects TUNE links by the offer_id + aff_id parameter signature regardless of domain, which is how white-label links on custom tracking domains get recognized at all.
Where it appears
In the affiliate link you publish
Example
https://track.brand-offers.com/aff_c?offer_id=15&aff_id=43185If aff_id is missing
Without aff_id the click cannot credit you. Note that TUNE setups often RENAME it mid-chain (affiliate_id, or embedded into utm values) — the value surviving matters, not the name.
How TUNE tracking fits together
TUNE is white-label software: each brand runs it on its own tracking domain (track.brand.com, go.brand-offers.com, etc.). Links hit an /aff_c or /aff_l endpoint with offer_id and aff_id, register the click, and redirect to the offer’s landing page.
Because every brand’s domain is different, TUNE links are identified by their parameter signature, not their domain — which is exactly how Afterlink’s detector recognizes them. Offers are versioned and retired frequently; offer_id=15 might be replaced by offer_id=42 with a new landing page, orphaning your old links.
Frequently asked questions
What does the aff_id parameter do?
aff_id is TUNE's your tune affiliate id. aff_id identifies you in TUNE-powered programs.
What if aff_id is missing?
Without aff_id the click cannot credit you. Note that TUNE setups often RENAME it mid-chain (affiliate_id, or embedded into utm values) — the value surviving matters, not the name.
Is aff_id in my analytics affiliate traffic?
Yes — if aff_id shows up in your site analytics or server logs, that traffic arrived via TUNE affiliate links.
Related
Check every affiliate link you've ever published
Parameter checks are one of five validations Afterlink runs on every TUNE link. Afterlink scans your entire YouTube channel or website, follows every redirect chain, and alerts you the day a link breaks.
Run a free scan