Hi, @07be6 (07be6)​ 

Thank you for posting on our Community page!

In the documentation you already checked and https://developer.okta.com/docs/reference/api/users/#list-users-with-a-filter, there are the following mentions:

• Supports only the equal eq operator from the standard Okta API filtering semantics, except in the case of the lastUpdated property. This property can also use the inequality operators (gt, ge, lt, and le).
• Supports only the logical operators and and or.
• Is case-sensitive for attribute names and query values, while attribute operators are case-insensitive.

sw is not supported in list search. eq should work; If there is no result, it does not find any match for that first name search value in your API call. If filtering by email, lastName, or firstName, it may be easier to use q instead of filter.

Hope this helps!

Thank you for reaching out to our Community and have a great day!

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