Why am I getting errors when trying to send SMS?

What is the error message? Could you please post the code you used to send Fax/SMS ?

Hello The response from ring central shows sms sent, but you didn't get it. Receipt(status=200, response={ "uri" : "https://platform.devtest.ringcentral....", "id" : 2697082004, "to" : [ { "phoneNumber" : "+XXXXXXXXXXX", "location" : "Aurora, IL" } ], "from" : { "phoneNumber" : "+XXXXXXXXXX", "location" : "Montebello, CA" }, "type" : "SMS", "creationTime" : "2017-02-17T13:18:40.000Z", "readStatus" : "Read", "priority" : "Normal", "attachments" : [ { "id" : 2697082004, "uri" : "https://platform.devtest.ringcentral....", "type" : "Text", "contentType" : "text/plain" } ], "direction" : "Outbound", "availability" : "Alive", "subject" : "Test SMS using a RingCentral Developer account - test sms content", "messageStatus" : "Sent", "smsSendingAttemptsCount" : 1, "conversationId" : 6361148894337916524, "conversation" : { "id" : "6361148894337916524", "uri" : "https://platform.devtest.ringcentral...." }, "lastModifiedTime" : "2017-02-17T13:18:40.265Z"}, key=null)

The response said that SMS was sent. I have no idea why you didn't get it.