QuickBooks error code 3002 can be categorized as the problem in contacting the server. When the error occurs you get the error message saying – The server is currently unavailable. It may be undergoing maintenance. Please try to sync again later.
The main reason for the occurrence of the error is some problem with the data connection services. You need to try later. Get the full details of all types of QuickBooks Error Codes and their fixes .
As the server is not available at the current moment the error occurs. It is undergoing maintenance and you can retry later on.
If the above solution does not resolve the QuickBooks issue or answer your question, you can read discussions and post messages and questions relating to your QB issue on the Intuit QuickBooks Community site introduced by Intuit or you can connect with the QuickBooks support for guidance and error fixation.
1. Intuit Knowledge Base: Intuit has large number QuickBooks technical issues along with their possible fixes processes, making it a first choice when the requirement comes of QuickBooks technical support.
2. QuickBooks Forums: QuickBooks forums are the best resources for QuickBooks technical support issues for live solutions to live problems faced with QuickBooks.
3. QuickBooks Technical Support Executive: Connecting with a QuickBooks Technical Support specialist for any technical query is recognized as an effective way of getting help.