update_payload | object or string | Yes | - | Creative fields to update as a JSON object; only the fields you include are changed (each key becomes a JSON-Patch add operation, and a null value removes an optional attribute). Editable fields per the Snapchat docs: name, brand_name, headline, call_to_action, shareable, profile_properties, and the attachment property objects (web_view_properties, app_install_properties, deep_link_properties, ad_to_call_properties, ad_to_message_properties). top_snap_media_id can only be changed before the creative is part of an ad that has started serving. IMPORTANT: changing a creative affects ALL ads that use it; Snapchat re-reviews those ads and pauses them until approved. An ad’s creative_id itself cannot be changed; to point an ad at different content, create a new creative and a new ad instead. Example: {“headline”: “New Headline”, “web_view_properties”: {“url”: “https://example.com/new”}} |