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Creating and Importing the Service Description FileLocate this document in the navigation structure

Use

In the first step we create a service description file and import it to the SAP Gateway backend system using the OData Channel Generation Tool, as follows:

  1. Create an example OData edmx file with the content shown below and name it epm.xml:

    <?xml version="1.0" encoding="utf-8" ?>
 <edmx:Edmx Version="1.0" xmlns:edmx="http://schemas.microsoft.com/ado/2007/06/edmx" xmlns:gp="http://www.sap.com/Protocols/SAPData/GenericPlayer" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns:sap="http://www.sap.com/Protocols/SAPData">
 <edmx:DataServices m:DataServiceVersion="2.0">
 <Schema Namespace="GOODSISSUE" xmlns="http://schemas.microsoft.com/ado/2008/09/edm">
 <EntityType Name="GoodsIssue" sap:content-version="1">
 <Key>
  <PropertyRef Name="GoodsIssueKey" />
  </Key>
  <Property Name="SalesOrderNumber" Type="Edm.String" Nullable="false" MaxLength="10" sap:label="Sales Order Number" sap:creatable="false" sap:updatable="false" sap:filterable="false" />
  <Property Name="BuyerID" Type="Edm.String" Nullable="false" MaxLength="10" sap:label="Buyer ID" sap:creatable="false" sap:updatable="false" sap:filterable="false" />
  <Property Name="BuyerName" Type="Edm.String" Nullable="false" MaxLength="80" sap:label="Buyer Name" sap:creatable="false" sap:updatable="false" sap:filterable="false" />
  <Property Name="BuyerKey" Type="Edm.Guid" Nullable="false" sap:label="Buyer Key" sap:creatable="false" sap:updatable="false" sap:filterable="false" />
  <Property Name="SalesOrderKey" Type="Edm.Guid" Nullable="false" sap:label="Sales Order Key" sap:creatable="false" sap:updatable="false" sap:filterable="false" />
  <Property Name="GoodsIssueKey" Type="Edm.Guid" Nullable="false" sap:label="Goods Issue Key" sap:creatable="false" sap:updatable="false" sap:filterable="false" />
  <Property Name="ChangedOn" Type="Edm.DateTime" Nullable="false" Precision="0" sap:label="Changed On" sap:creatable="false" sap:updatable="false" sap:filterable="false" m:FC_TargetPath="SyndicationUpdated" m:FC_KeepInContent="false" />
  <Property Name="RootTitle" Type="Edm.String" Nullable="false" sap:label="Root Title" sap:creatable="false" sap:filterable="false" m:FC_TargetPath="SyndicationTitle" m:FC_KeepInContent="false" />
  <Property Name="CreatedOn" Type="Edm.DateTime" Nullable="false" Precision="0" sap:label="Created On" sap:creatable="false" sap:updatable="false" sap:filterable="true" />
  <NavigationProperty Name="goodsissueitem" Relationship="GOODSISSUE.goodsissueitem" FromRole="FromRole_GoodsIssue_GoodsIssueItem" ToRole="ToRole_GoodsIssueItem_GoodsIssue" />
  </EntityType>
 <EntityType Name="GoodsIssueItem" sap:content-version="1>
 <Key>
  <PropertyRef Name="GoodsIssueKey" />
  </Key>
  <Property Name="GoodsIssueKey" Type="Edm.Guid" Nullable="false" sap:creatable="false" sap:updatable="false" sap:filterable="false" />
  <Property Name="GoodsIssueItemKey" Type="Edm.Guid" Nullable="false" sap:label="Goods Issue Item Key" sap:creatable="false" sap:updatable="false" sap:filterable="false" />
  </EntityType>
 <Association Name="goodsissueitem" sap:content-version="1">
  <End Type="GOODSISSUE.GoodsIssue" Multiplicity="1" Role="FromRole_GoodsIssue_GoodsIssueItem" />
  <End Type="GOODSISSUE.GoodsIssueItem" Multiplicity="*" Role="ToRole_GoodsIssueItem_GoodsIssue" />
  </Association>
 <EntityContainer Name="GOODSISSUE" m:IsDefaultEntityContainer="true">
  <EntitySet Name="GoodsIssueCollection" EntityType="GOODSISSUE.GoodsIssue" sap:content-version="1" sap:creatable="false" sap:updatable="false" sap:deletable="false" sap:requires-filter="true" />
  <EntitySet Name="GoodsIssueItemCollection" EntityType="GOODSISSUE.GoodsIssueItem" sap:content-version="1" sap:creatable="false" sap:updatable="false" sap:deletable="false" />
 <AssociationSet Name="AssocSet_goodsissueitem" Association="GOODSISSUE.goodsissueitem" sap:content-version="1" sap:creatable="false" sap:updatable="false" sap:deletable="false">
  <End EntitySet="GoodsIssueCollection" Role="FromRole_GoodsIssue_GoodsIssueItem" />
  <End EntitySet="GoodsIssueItemCollection" Role="ToRole_GoodsIssueItem_GoodsIssue" />
  </AssociationSet>
  </EntityContainer>
  </Schema>
  </edmx:DataServices>
  </edmx:Edmx>

  2. Log on to your backend system and start transaction /IWBEP/IMPORT_MODEL by entering /N/IWBEP/IMPORT_MODEL in the command field.

    The Select a model file for import screen is displayed.

  3. Browse to the location of your service description file, created in step 1, and choose Open:

    Select a model file for import screen

  4. The mapping screen, Generate OData Channel Implementation is displayed.

Result

The service description file is created and imported ready for you to confirm the mapping and generate the classes and interfaces.