Audience creation using geo targeting fails to qualify visitors when multiple parameters for the Audience are specified
Confirm that each parameter is on its own line in the Audience creation UI - https://experienceleague.adobe.com/docs/target/using/audiences/create-audiences/categories-audiences/geo.html
In the example screenshot below, the parameters are entered correctly, while entering them as “11236, 07040, 10019” would fail.
When using multiple parameters, each parameter must be on a separate line in the UI. Separating parameters using a comma, semi-colon, or other punctuation marks will cause the parameters to be interpreted as a single, long parameter.