I have created a flow service which converts a flat file into values by calling the service convertToValues in WMFlatFile.
After converting other business logics are written.
The problem is that when I trace the service it runs well but when I run it ,the service throws error saying that ffData cannot be null.
I checked my service and found that valid value is mapped to ffData of convertToValues.
If anyone knows the reason then please let me know the cause and solution.