Affiliate tracking, consent and commercial disclosure

Before you begin

Reliable measurement begins with a shared description of what the system is supposed to record. Advertisers, publishers and technical providers should be able to follow the same journey from an eligible interaction to an approved conversion and understand where data is stored, changed or removed.

Compliance is not a label added after implementation. It affects the design of tracking, consent choices, partner instructions, disclosures and retention from the beginning. The principles below are practical preparation, but organisations should obtain qualified advice for the technologies and countries they actually use.

1. Map the complete data flow

List the advertiser, publisher, network and technical providers involved. Document the identifiers, event data, purposes, storage periods and transfers associated with every step.

2. Define attribution explicitly

Document the eligible interaction, attribution window, channel priority, promo-code rules, deduplication and validation logic. Partners should be able to understand why commission was approved or rejected.

3. Apply consent rules to the actual technology

The applicable requirements depend on the technology, purpose and countries involved. Identify storage and access that require consent, prevent activation when required and preserve evidence of user choices. Obtain qualified legal advice for your implementation.

4. Make commercial relationships clear

Publishers and creators should disclose advertising, sponsorship and affiliate relationships in a prominent, understandable way appropriate to the content format and market.

5. Minimise and secure data

Collect only what is required, restrict access, protect transfers, define retention and incident procedures, and review processors and sub-processors.

6. Audit both acceptance and refusal paths

Test tags, postbacks, server events, consent choices, transaction corrections and deletion workflows. Repeat the audit after platform, policy or implementation changes.

Apply the rule to the actual use case and country

The French CNIL FAQ distinguishes affiliate billing trackers, which do not benefit from the consent exemption, from trackers necessary for a cashback or reward service expressly requested by the user. These situations must not be conflated. Classification depends on actual operation and purpose rather than the software’s commercial label.

For the United Kingdom, consult the current ICO storage and access guidance. For commercial recommendations directed at the US market, review FTC disclosure guidance. A configuration suitable for one market does not automatically validate every other market.

Preserve a useful test record

For each journey, record date, environment, device, consent choice, test order identifier, expected behaviour and observed behaviour. Inspect requests before a choice, after acceptance and after refusal. Trace server-generated data too: the absence of a visible cookie does not establish the absence of collection.

Replay the order and a cancellation to inspect idempotency, deduplication and final state. Obtain separate technical and legal review. A banner screenshot does not establish how every event behaves.

Practical answers

Questions to settle before signing