It consist many step, Check it out ..
Step 1: Create Project name
Setup project name, subproject and object
Step 2: Configuration object atribute
To define Object type and Import Method
Step3: Configuration Source Structures
Make structure name, let say MATERIAL01
Step4: Configuration Source Fields
Under Structures name, fields name should be define. what mandatory fields name should
be fill in the transaction.
Step5: Configuration Structure Relations
To make relationship between defined source fields with REC
Step6: