We are using the API for sending text messages. In the dashboard there's a graph which indicates how many messages went through and how many failed. Is there any place where I can see which all failed and why?
You can call the message-store (look for Message List from the API reference) API to read text messaging data. You can check the messageStatus and the deliveryErrorCode to check which message failed and the reason from the error code. You can also read the smsSendingAttemptsCount to see how many time the message was sent/resent