Vendor catalogs in D365 8.1

HI Experts,

I am trying to upload the vendor catalogs in D365 but getting Processing status = Invalid CMR and Message = There are no valid products to import. I have followed the same steps as mentioned in the below blog.

https://blogs.msdn.microsoft.com/dynamicsaxscm/2016/05/25/vendor-catalogs-in-dynamics-ax/

Can some one let me know if some thing has changed in 8.1 that I am missing?

Thanks and regards,

Gurunath