Transaction – CUUPDMV – Material Variant update
One can use transaction CUUPDMV or report RCUUPDMATVAR via SA38 to update the material variants after a model change.
Usage of the Report
A configuration model was changed. For example, a new characteristic was included in a class and this characteristic is analyzed via object dependencies. Alternatively, object dependencies are changed and calculated characteristic values change as a result. At the same time, many material variants, which would now have to be changed, exist in order to adjust the stored configurations to the new model. The system sees a material variant as a product variant of a configurable material whose characteristic values are already defined in the material master record. It is therefore treated as a stock material. In principle, the configurations of the material variants may be updated manually by executing transaction MM02 and calling the configuration in this case. An alternative is to execute CUUPDMV to update the material variants.
SAP Tips – Content of database relevant to configuration of objects
Should you wish to see the tables and information extracted from them for a configured item in a sales document you can use the transaction code:
CUTABLEINFO.
Variant Configuration Tips
The SAP easy access Menu for most variant configuration parameters can be executed with transaction CU00.
Configuration simulation can be run with CU50.
To check characteristics and values of a configured material use CU80.
Transaction PMEVC can be used to analyse the configuration model for a product. (You can simulate a configuration from here too.) Read more 
