This error can occur if there is firewall/anti-virus software present on your PC.
For the sync app to be able to communicate with our servers, you must allow the service through your Firewall. On rare occasions, you may need to whitelist data.docurec.com. You will also need to ensure that you allow outgoing TCP on port 443. (data.autoentry.com:443)
You will then need to publish an Invoice and allow 5-10 minutes for it to post through to Sage. If the invoice does successfully publish, this would indicate that it is a historical error and should clear shortly.
If the Invoice does not publish after this time, you will need to follow these steps:
Restart your Sync App Desktop Service.
Log out of the Sync App and log back in.
Go back to the AutoEntry website and publish the Invoice again.