Here's the information entered on postman URL - https://test.api.amadeus.com/v1/security/oauth2/token Parameters: grant_type - client_credentials client_secret - {{My_API_Secret_key}} client_id - {{My_API_key}}
Headers Content Type : application/x-www-form-urlencoded
It returns this response : { "error": "invalid_request", "error_description": "Mandatory grant_type form parameter missing", "code": 38187, "title": "Invalid parameters" }