Select a form A/B setup winnerCopy Pagepost https://api.omnisend.com/api/form-ab-setups/{abSetupID}/winnerSelect a winning version for a form A/B setup. Scopes: forms.writePath ParamsabSetupIDstringrequiredForm A/B setup IDBody ParamsWinner version form IDWinner selection for a form A/B setup.versionFormIDstringrequiredWinner version form ID.HeadersOmnisend-VersionstringrequiredDefaults to 2026-previewAPI version that specifies the response format and behaviourResponses 204Form A/B setup winner selected 400Request contains invalid or missing fields 401Authentication is missing or invalid 403Insufficient permissions for this operation 404Form A/B setup not found 409Form A/B setup is disabled 410API version has been retired 429Rate limit exceeded 500Unexpected error occurredUpdated 11 days ago Start a form A/B setupForm TemplatesDid this page help you?YesNo