Getting error DbxRequestUtil.unexpectedStatus(DbxRequestUtil.java:387)

The Dropbox API does have a general rate limiting system that applies to all account types, but we don't have specific rate numbers documented for that, and we cannot increase the limits for any particular app, user, or team. Apps should be written to handle these rate limit responses automatically. In any case that you get a rate limit error like this, the best practice is to retry the request, respecting the getBackoffMillis value if given, or using an exponential back-off, if not. I recommend referring to the error documentation and Error Handling Guide for more information.