We are trying to resolve an issue in data conversion which is typical for us as we have taken same items from 2 legacy systems and there is a complex business logic to tell the code to pick which item from which system to import in SAP. We followed all [practices as given to us|http://www.infoverto.com/2010/02/7-best-practices-for-erp-data.html] but now the issue is that the program aborts after migrating 58000 items - happened 3 times in this week. What can be the reason for this?