aws amaon connect chat aws connectparticipant send-message --content-type 'text/plain' --content hi --connection-token xxxx gives "User is not authorized to access this resource with an explicit deny

Hi,

your request is rejected since you're passing the participant token on your send-message operation instead of the connection token.

You can come around by changing the connection type like this:

aws connect start-chat-contact --instance-id XXX --contact-flow-id YYY --participant-details DisplayName=ZZZ
// Returns participantToken
aws connectparticipant create-participant-connection --type CONNECTION_CREDENTIALS --participant-token <participantToken>
// Returns connectionToken
aws connectparticipant send-message --content-type text/plain --content hi --connection-token <connectionToken>
/* Returns MessageId and timestamp e.g.:
{
    "Id": "a1b2c3d4-5678-90ab-cdef-EXAMPLE22222",
    "AbsoluteTime": "2022-10-26T07:03:19.534Z"
}
*/