Definition of Field Catalogs and Info. Structures 
Use
You can use the fields of the communication structure to define field catalogs. The field catalogs serve as a basis for defining information structures.
Activities
You can define field catalogs in the Customizing function of the Logistics Information System by choosing the menu bar sequence Logistics Data Warehouse ® Data Basis ® Field Catalogs ® Maintain self-defined field catalogs.
You must ensure that you define a key figure catalog.
You can define information structures in the Customizing function of the Logistics Information System by choosing the menu bar sequence Logistics Data Warehouse ® Data Basis ® Information Structures ® Maintain self-defined information structures.