https://userapps.support.sap.com/sap/support/knowledge/en/3750633
3750633 - CDS View ' CSTOCKQUANVALTS' shows different stock/values than Transaction MB5B - SAP ERP...
A discrepancy is observed between values displayed for Transaction MB5B and CDS View 'CSTOCKQUANVALTS' with DDL Name 'C_STOCKQUANTITYVALUETIMESERIES'.