Setting up DG Customizing for Filling 
The Display Structure: SAP Reference IMG screen appears.

You create the link between the characteristics and fields in the R/3 component Product Safety and the table fields in the R/3 component Dangerous Goods Management in the conversion table.
To ascertain which characteristics and fields in the R/3 substance database are allocated to which table fields in the DGTMD, see
Result
Transport the Customizing activities maintained to the target systems that are to be filled with the substance database data. In this way you ensure that any changes made to Customizing tables in the source system are updated in the target system tables.