Answer: In Google Analytics 4, character limits vary based on what you're tracking. Event names and parameter names are limited to 40 characters, while event parameter values generally allow up to 100 characters (with exceptions for fields like page_location, page_title, and page_referrer). User property names are capped at 24 characters, and user parameter values have a maximum of 36 characters. Knowing these limits can help ensure your GA4 setup remains within GA4’s specifications.
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These limits apply on a per-property basis. You can increase certain limits (but not event/parameter character limits) by upgrading your property to Google Analytics 360.
