Clickatell REST API routing error status 9

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API

Clickatell REST API routing error status 9 for all US number and any other numbers

Getting status code = 202 while calling api https://api.clickatell.com/rest/message.

and routing error status 9 for all numbers while sending sms using this api.

What I have tried:

calling this api
https://api.clickatell.com/rest/message[^]

Header parameters:

[{"key":"X-Version","value":"1","description":""},{"key":"Accept","value":"application/json","description":""},{"key":"Content-Type","value":"application/json","description":""},{"key":"Authorization","value":"bearer l6vwvFoTtljs16X49XYZsFMNcr5i3R.B7jYW.S0AiyL4cDGNjFbKpBYIy84AG9SomtUDoF5wjFMUHaSp","description":""}]

body:

{"text":"Test Message","to":["+919977556633"]}