When DataSynch is initially installed, the Last Successful Run Time and the Lockdown Date are automatically configured based on the date and time that DataSynch is installed.
The Last Successful Run Time refers to the last time DataSynch ran and completed successfully.When DataSynch runs, only data that has been inserted or updated since the last successful run time will be updated to the opposing application. For example, if your Last Successful Runtime is set to 10:00 and one record was modified at 9:55 and another modified at 10:05, only the latter will be updated. Once DataSynch successfully runs, the last successful run time will be updated to show the last time the integration started and finished successfully.
The Lockdown Date is a date that determines how far back transactional data is read. For example, say that data has been entered in both Salesforce and QuickBooks for the past two months and you install DataSynch today (setting the Lockdown date to today's date) to start integrating the two applications. Since you've been entering data in both applications you don't want anything in QuickBooks to be added to Salesforce again and vice versa as this would create duplication. It is possible that a previous record that you have already entered into the other application is modified. This modification would allow the record to be synced during the next scheduled DataSynch. Since the record in QuickBooks was never directly linked to the record in Salesforce, a new record would be created, causing an inaccuracy in your data. The lockdown date is set to avoid such an occurrence.
Prior to the first run of DataSynch, it is highly recommended that the Account Matcher and Product Matcher be run to avoid any kind of duplication. Once completed, you can run your first DataSynch. DataSynch will read and sync data based on the lockdown date and last successful run time. By default the last successful run time and the lockdown date are set to the date and time that the product was initially installed.