if Pcd.DatumType not in gDatumSizeStringDatabase:
        EdkLogger.error("build", AUTOGEN_ERROR,
                        "Unknown datum type [%s] of PCD %s.%s" % (Pcd.DatumType, Pcd.TokenSpaceGuidCName, Pcd.TokenCName),
                        ExtraData="[%s]" % str(Info))