# 15. How to limit one customer's use of a referral code?

Afflr provides provisions to limit the repeated use of one referral link or code by a customer. This will prevent the exploitation of the affiliate program by a single customer. 

To enable this in Afflr, 

1. Go to Afflr dashboard -> Programs
2. Click create a program or Edit an existing program 
3. Scroll down and tick the check box that reds 'Limit to one use per customer' 
4. Save the program 

<figure><img src="https://lh7-us.googleusercontent.com/kcSS7AGHjhKVmgz_q4kSMIBuLSgj1TZGXJjlac9_XhC3AerNAsMUzCDp7mSqmHfovSp5SQn8WYMqhILfuS9dmrVDsS5pN1d89xsFEYvS3ojvoW2eXJ1sLllBtEepQww08PaarOML1N4xwZ9SG_HIOso" alt=""><figcaption><p>Limit to one use per customer</p></figcaption></figure>

Once this option is enabled, one customer can use an affiliate link or code only one time.&#x20;

{% embed url="<https://youtu.be/8IzlSfSD730?si=VMaC4xV4J6NQJ5BJ>" %}

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