Solution : https://service.sap.com/sap/support/notes/1467858 (SAP Service marketplace login required)
Key words :
component sv-smg-ser-ewa, dynamic updatecustomizing table_stser701_2008_2 reason, terms cl_dmd_model_db===============cp, dynamic update, customizing table_stser701_2008_2, cl_dmd_model_db===============cm00s, dump occurs, model class, corrupt data, internal tables