Hi, this may help

Note: There’s a limit of 250 custom data attributes per workspace, but you can archive unused attributes to free up space. 

Found in this article

https://www.intercom.com/help/en/articles/179-send-custom-user-attributes-to-intercom/p>

Hi Brent, thanks for the reply.

I saw that, but I am talking specifically about list entries for one attribute. So if I have 'product code' as an attribute, and in its list I add all of our product codes, so we can search to see which are the most popular prods. Does the list for the attribute count as part of the broader attribute limitation of 250?

Hey @lamint​, there's a hard limit of 20 for list attribute items.

Thanks. That's what I was looking for.