Creation Of OData Modeler in Standard BO & Custom BO

Dear Experts,
      The OData Modeler enables partners and customers to create self-defined OData services to access and modify PSM released entities. For e.g. to build mobile Add-On applications like SAP Manager Approvals or SAP Project Cockpit

In the OData Modeler We can Read And Access  the data From the BYD system And  this data can be used for any Add-on Projects.
From the OData Modeler Service  We can get the data in the XML format and From XML we can convert the Data through Json format.
From this we can Skip the Web-service functionality.And in the OData Modeler there are some restriction to Access the data and i have attached the document for the creation of OData Modeler, in SAP BYD

Step 1: Go to Application and User Management work centre and open OData Services

Step 2: Create a new OData Service

Step 3: In new OData Editor enable NO AUTHENTICATION CHECK

Step 4: in Entity Types select the Business Object

Step 5: Select the required fields

Step 6: The required field is displayed on the editor

Step 7: In Function Imports tab select the Query and correspondin BO and in Parameters tab select the particular BO fields and save

Step 8: After activating the Service URL will be displayed on top of the screen. Click on it.

Step 9: The XML file for the particular BO will be displayed

Step 10: The XML file conveted to JSON format : Add the Funtion at end of URL $format=json