Thank you Karthik for the inputs.
I tried with external it doesn't work when the value is "1,132.00" ( you missed the quotes (" ")).
and with external the value 1,132.00(without( " ")) the data load works fine (thats why this scenario was working for both of us)
and without external both 1,132.00 and "1,132.00" values got failed.
Any thoughts?