How do I add sub IDs to a click tracking link?

What is a sub ID?

A sub ID allows you to identify individual tracking events. They can help you to evaluate the success of SEO or retargeting campaigns, for example.

How do I add sub IDs?

Every subID has to be added as an independent SMC parameter to the tracking URL you want to use. Let’s start with an example of a regular ad media code:


To add a subID, place an ampersand sign (&) after the first parameter and use ‘smc1’ as the name of the parameter. Subsequently, add the equal sign and the subID code you want to use. Your tracking URL will now look like this:


If you want to use multiple subIDs, make sure you add them in the same way and number the parameters consecutively. Also make sure the parameters are seperated by the ampersand sign (&). With two additional subIDs, the tracking URL will look like this:


Please note you can add up to six subIDs to your tracking URLs.

The use of alphanumeric sub IDs is highly recommended. Special characters (such as ßç or æ) should be submitted URL-encoded. Full stops, commas, quotation marks etc. should be avoided. If you export your sub ID data, particularly with Excel, make sure you use UTF-8 characters instead of ISO-formats.