Hi Chennamsetty Anil,
By default, OutSystems provide some prefined functions that you can use to validate the data type you need to validate. Some of them are mentioned below. See if this can help. This will return True for success and false if they are not of the mentioned type.
You need to loop through the list that is fetch from Excel and use this function on the columns you want to validate.
LongIntegerToIntegerValidate()""
TextToDateTimeValidate()
TextToDateValidate()
TextToDecimalValidate()
TextToIntegerValidate()
TextToLongIntegerValidate()
TextToTimeValidate()
Thanks
Pranav