Below procedure has served me well in identifying the error records in PSA - see if it helps you
Copy the request from PSA (datasource - manage - request)
Open data source - context menu - goto - technical attributes - double click on PSA table - contents (table view)
Pass the request number - remove the limit of maximum no of records - execute
highlighyt the 0date column in question - set filter - F4 (will show you only unique values) - sort them (descending/ascending) - you should see wrong date field as the first or last value depending on the sort