End user need to Create Materials using Bdc without Authorization.

Hi,

I need some suggestions, Facing one problem,

My Client is Creating almost 500 materials, Every day. They don't want to Create through the manually. 

From different department people are need the materials Not a single person Creating the materials. We decided to Given bdc for creating the material.

For fixing the properties of the materials. While restricting the Material properties, We don't want to give MM01  Authorization to the users.

I Completed Recording And Checking in Quality. But while executing the T-code it is saying No Authorization.
I hope They don't have authorization. How could  these people create the materials Without authorization.

Need Valuable suggestions.