Affiliate programs need a clear rule for deciding which partner receives credit when more than one interaction occurs before a purchase. The rule affects commissions, partner trust, and reported channel performance. A tracking link alone does not settle the question; the attribution policy defines what the program counts.
Start with the program’s credit rule
Common approaches include crediting the last eligible referral, the first referral, or a defined set of qualifying interactions. Last-touch rules are easy to explain, while first-touch rules emphasize discovery. Multi-touch approaches can recognize several contributions but require a defensible method for dividing credit.
State which events qualify, what happens when partners overlap, and how refunds, cancellations, or duplicate orders are handled. Write the rule before evaluating partner performance so it is not changed to favor a convenient result.
Use referral links and codes carefully
Unique links can record a click identifier and campaign context, while coupon codes can help identify a partner when a shopper buys later or on another device. Neither method is complete: links can be stripped or shared, and codes can circulate beyond their original audience.
Keep link naming consistent and test redirects, checkout flows, and cross-domain steps. If codes are used as evidence of referral, distinguish a code being entered from proof that a partner caused the sale.
Define the attribution window
A window sets how long an eligible interaction can receive credit. Short windows reduce the chance of claiming unrelated later activity, while longer windows may fit considered purchases. Select a period that reflects the buying process and apply it consistently across partners.
Report the window next to the commission rule. A conversion credited in a partner dashboard may not match a platform report if the platforms use different windows or event definitions.
Reconcile and audit
Compare orders, cancellations, commissions, and partner records using a stable transaction identifier. Deduplicate repeated events and document how cross-device purchases, returns, and manual adjustments are treated.
Review unusual patterns such as sudden code spikes, repeated orders, or a mismatch between clicks and transactions. An auditable rule set makes disagreements easier to resolve and prevents attribution from becoming a negotiation after the sale.
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