Make Sure Combination of product Code and product Name is unique and same like, when product added first time in application.

Product Name and Product Code Combination Should be Unique.

5. Quantity and Tier Price field only accept Integer value.

By clicking on Export one pop-up will get display as choose Type
1. Export to Drive
2. Export to Mobile

If user select option “ Export to Drive” the CSV File will create on Google Drive.
If User Select option “Export to Mobile” then CSV File will create in Mobile Storage.