I have created opportunity(invoice) in salesforce when I run the sync only the customer is getting craeated and when I checked the logs it shows waiting for response so many times and in the completes process by saying error in updating the timestamp.How to resolve this?
With respect to your question, that error might come because you have not attached the products for that opportunity. So to create invoice in Quickbooks products should be there. Attach products for that particular opportunity and run the sync. If you still face the issue contact DBSync support.