21602: Message body is requiredERROR: 21602error-21602 page anchorERROR Error - 21602error---21602 page anchor 'Body' OR MediaURL is required to send a Messagebody-or-mediaurl-is-required-to-send-a-message page anchorYou have attempted to send a message without a 'Body'. Retry your message including a 'Body' text.