title: Customer Address Data - Filter postal code by district
body: <p>We are creating customers on SAP CRM and replicate these customers to SAP ECC.
  User needs to filter postal codes by the district code they choose while creating customer.
  This functionality has provided by SAP ECC.
  But in CRM we couldnt find any relation between postal codes and district codes.
  How can we filter postal codes by district codes in SAP CRM?</p>