Hey Kiran,
I did not test the data importer module in 10.12 but you can check how to implement it properly here:
Official doc: https://docs.mendix.com/appstore/modules/data-importer/
Video Tutorial: https://www.youtube.com/watch?v=rtLQEehxcVM
If this answer helps, mark as "accepted" :)
Best Regards,
Ricardo Pereira
I followed the instructions or steps from the video itself but it was not working in mendix 10.12
Hi Kiran,
it works with 10.12MTS along with latest data importer run-time module from marketplace. Would be nice if you can share the stack/logs or any relevant screenshots of the error you are encountering.