Some providers have review response length or character restrictions. For example, Google restricts responses to reviews to 4000 characters. If a provider does have a limit like this, you won't see the specifics of it in the Reputation Pro dashboard as these all vary and may be subject to change.
These limits are typically quite large so it's not something to worry about on each response. Rest assured that if you do run up against a limit, Reputation Pro will let you know in the form of a publishing error so you can rewrite your response to fit within the provider's limitations.
Additional Questions? Please reach out to Listen360 Support via email at support@listen360.com