Hi
Will take the questions one by one.
1.Of course, the purchase happens after top management is committed to it. What I meant was that once the project enters the implementation stage, Top management many times sideline themselves due to their other enguagements and HR has to manage change. My point is that if Top management extends its support , the change management will be lot easier.
2. Scope of the project is defined before final Purchase order is raised by the company.
Data conversion is usually not a problem. What you are talking about is the Payroll data... due care has to be taken while entering anything into the system. It's not just Tax related issues, every detail is of utmost importance.
What companies normally do is that they implement software scripts to transfer data from soft files to the system. But yes, possibility of human error is always there. System can reduce the errors to a level but ultimately it is humans who are running it.
No one can blame system for giving wrong output. Afterall it is Garbage In and Garbage Out.
Someone would have to take ownership of the errors as they donot occur normally
Hope that answers your query
Cheers
Saurabh
www.SmilesERM.com