It will return a token String message if API executes successfully.
Here are the possible error messages, which return if any condition gets failed or required data is missing for processing.
|Error Code||Error Description|
|400||The request could not be understood by the server due to malformed syntax.|
|401||You are not authorized to view the resource.|
|403||Accessing the resource you were trying to reach is forbidden.|
|404||The resource you were trying to reach is not found.|