dispute_life_cycle_stage value is INQUIRY.username:passwordAuthorization: Basic *****************{
"message": "Shipment is in progress."
}curl --location -g --request POST 'https://api-m.sandbox.paypal.com/v1/customer/disputes/{{dispute_id}}/send-message' \
--header 'Authorization: Basic <encoded-value>' \
--header 'Content-Type: application/json' \
--data-raw '{
"message": "Shipment is in progress."
}'{
"links": [
{
"href": "https://api-m.sandbox.paypal.com/v1/customer/disputes/PP-R-EYZ-10065656",
"rel": "detail",
"method": "GET"
}
]
}