Good morning @Md_Saedur_Rahman and welcome to the ODK Community forum.
When you get a chance, please take some time to introduce yourself here 
How did you proceed to generate your XForm xml file ?
Did you sent an xml file to Aggregate ?
Good morning @Md_Saedur_Rahman and welcome to the ODK Community forum.
When you get a chance, please take some time to introduce yourself here
How did you proceed to generate your XForm xml file ?
Did you sent an xml file to Aggregate ?