Hi Prabha,As the error indicates: one is type:string and the @gender destination field is type:byte.Can you change the destination field to match type:string?The reason why changing to type:integer might work is because type:byte is in essence a number but it doesn't mean it's correct, as the gender values are strings ('F', 'M', 'Other').Same thing for Date: Make sure content type matches the destination field.I hope this helps! Pablo

Hi Prabha,Did you try changing the column name or getting rid of it if not needed?Let me know.All the best,Pablo