50509: Programmable Chat: Media message body cannot be updatedERROR: 50509error-50509 page anchorPROGRAMMABLE CHATERROR Error - 50509error---50509 page anchor Programmable Chat: Media message body update not allowedprogrammable-chat-media-message-body-update-not-allowed page anchor Possible Causespossible-causes page anchor Media message body cannot be updated.