HTTP request failed after OData update() method

Hello,

I have a strange issue - after I use update() method of the sap.ui.model.odata.ODataModel class, I can't make read() from the OData model.

I use Northwind OData service, V2.

I can do as much read() actions as I want - everything works fine.

But after I update() for the first time after the page is loaded and try to make read(), I get the following error:

GET https://webidetesting<appname here>-<account name here>.dispatcher.hana.ondemand.com/nort…iexfh2tyudc5p4qhx5gdf))/OData/OData.svc/Products?$filter=(Rating%20eq%201) 500 (Internal Server Error)

HTTP Status 500 - HTTP protocol error occurred while connecting to remote host http://services.odata.org

When I reload the page and make read(), I can see that the update was successful.

Here is my update() method:

sap.ui.getCore().getModel("odata").update(            "/"+sSourceTable,            oUpdate,            {                    merge: true,                async: false,                success: function(){                 console.log("Success!");             },                  error: function(oError){                      console.log("Error!");                      console.log(oError);                  }            }        );

Any ideas why this may happen?

Thank you.