Material Substitution Table in SAP

When you use Material Determination / Material Substitution functionality you execute VB11 to store the record. A condition record number is stored in the table KONDD with the record number (KNUMH), the sustitute Material (SMATN) and the reason of substitution (SUGRD). Further details of the condition is stored in the table KOTD001 (Material determination type, Material entered, Validity end date of the condition record, Validity start date of the condition record, Condition record number KNUMH linking KONDD)