Set a maximum number of commissions each product ID can generate per partner. For example, pay once for each new product subscription a customer starts, but not for its renewals.
Go to Flows and create or edit a flow.
In step 3, expand Product limits and switch on Limit commissions per product ID.
Enter the Product ID and the limit.
To set different limits for other products, click Add product ID override and add each product.
Click Save.
Once a partner reaches the limit for a product, that product's payments stop creating commissions for them in this flow.