1) Converting data from legacy applications
2) Specifying legacy system interfaces, and
3)Ongoing data validation between systems.
Each of these issues requires careful planning and analysis. Understand which applications are to be the "system of record" and the "system of entry". Define data validation and transformation rules. Finally, ensure that every data element is owned by a specific department. These aren't easy tasks, but they are essential to the success of every CRM project.
For more information on implementing CRM, check out searchCRM's Intro to Implementing CRM Best Web Links.
This was first published in July 2001