Each substance characteristic category is represented by a class of class type 100. In R/3 Classification System you can assign any number of characteristics to a class.

In Customizing for Product Safety (IMG) a substance characteristic category is assigned to each class. In this way the substance characteristic category inherits the characteristics of the class. Substance characteristic categories can be of type substance property, substance composition, or substance listing.

Characteristics can have the following data types:

• Numerical characteristics

• Number range numerical characteristics

• User-defined alphanumerical characteristics

• Predefined format characteristics

• Phrase library-related characteristics (data type CHAR30)

Numerical characteristics feature a default unit of measurement. In fields such as these, you only need to enter the value as a number. The unit of measurement is added after you have chosen Confirm.

You can only use other units of measurement, if these are contained in the R/3 unit of measurement table, feature identical dimensions, and if the conversion parameters have been maintained.

If you have created new characteristics you must carry out the Adjust char. cat. - char. (Adjust characteristic category - characteristics) function in Master Data Adjustment to update the display.