Why is smooch api rejecting any image is post as mediaUrl on post message conversation api

Question

Here's the error message, for message type "image" and "file"

{"error": { "code":"invalid_file",
  "description":"File rejected. File type not allowed"}
}

Answer 1

Your file upload was most likely rejected because of a disallowed file extension. The whitelist of file extensions accepted by Smooch is documented here.