[Applies to: Microsoft Dynamics CRM 4.0]

Resolve data synchronization errors

During synchronization, if you encounter errors that prevent some of your Microsoft Dynamics CRM Online data from being synchronized when you go online, the Synchronizing Microsoft Dynamics CRM Data dialog box opens, and the Error tab displays the list of errors.

In the Synchronizing Microsoft Dynamics CRM Data dialog box, choose one of the following options:
- Finish going online and do not save the data changes made offline
  Choose this option when you are unable to fix or change errors, for example, if you no longer have access to a record or the record has been deleted. You can also choose this option if you've made minor changes that can be discarded or updated later.
  
  Important Discarding changes made while offline does not revert those changes. You will need to revert those changes manually.
- Stay offline and try to fix the errors so all the data will synchronize
  Choose this option if you want to attempt to fix the errors by using the information provided in the Synchronizing Microsoft Dynamics CRM Data dialog box. Any data entered or changed after you went offline will be lost. If you know which records you have added or changed, you can print them out so you can reenter the data later.
- Resolving Possible Duplicate Records If duplicates are detected during synchronization, you can resolve them.
  More information: Check for Duplicates
Click OK to continue.
The Synchronizing Microsoft Dynamics CRM Data dialog box will appear again. If the problem cannot be fixed, use the Web application to open the server version of the records that caused synchronization errors. Compare changes between each server version and the version you have in Microsoft Dynamics CRM Online for Outlook, and make your changes to the server version. When all the server versions of the items have been updated, go online and discard the changes you made offline.