ID | Field4 | Required
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1 ICI Bank,ADR, pfd ICI Bank,American Dep Rep, Preferred Stock
2 Man Bank, pfd Man Bank, Preferred Stock
3 Yes Bank Yes Bank
Here
ADR - American Dep Repe
pfd - Preferred Stock
The code is using ", " (with a space) as the delimeter. Your data has "," and ", " so you have three options:
1. Change the code to use "," (without space) as the delimeter
2. Perform two replace opertations, one for "," and the other for ", " and join both together.
3. Amend your data so it's consistent.