Replaces the stored validation settings for the campaign — include every rule section that should remain active after the update. The simplest workflow: fetch the current settings with Get Campaign Setting Details, modify them, and submit the result here. Request body shape is the same as Create Campaign Settings.> 🚧 Updates replace the whole rule set>> Omitted sections are removed. Fetch current settings first, edit, then submit.> 📘 Availability>> Available on Advanced plans and above. Enable Campaign Validation in your account Feature Settings when it is available on your plan — see Plans & Feature Access.