ErrorApplication error21252: Invalid RegionPositive FeedbackNegative FeedbackTwilio Elastic SIP Trunking DocumentationSIP Trunking Descriptiondescription page anchorPositive FeedbackNegative Feedback Possible causespossible-causes page anchorPositive FeedbackNegative Feedback The Region requested is not valid. Possible solutionspossible-solutions page anchorPositive FeedbackNegative Feedback Please see Localized Termination URIs for more information on the valid Elastic SIP Trunking Regions.