https://community.sap.com/t5/application-development-and-automation-discussions/etag-checking-optimistic-locking-in-offline-odata-tutorial-for-android/m-p/12399203#M1995504 <P>When querying the sample odata service, I cannot see any @odata.etag properties in the response. Therefore I think there is just no support for etags in the sample-odata-v2-espm service.<BR />Is it possible to use another odata service supporting etags with an trial account?</P> Thu, 15 Jul 2021 13:45:23 GMT former_member756951 2021-07-15T13:45:23Z https://community.sap.com/t5/application-development-and-automation-discussions/etag-checking-optimistic-locking-in-offline-odata-tutorial-for-android/m-p/12399202#M1995503 <P>Hi,</P> <P>I just completed the <A href="http://developers.sap.com/tutorials/cp-sdk-android-wizard-app-offline.html">Offline OData Tutorial for Android</A>. According to the <A href="http://help.sap.com/doc/c2d571df73104f72b9f1b73e06c5609a/Latest/en-US/docs/user-guide/odata/Offline_OData_Handling_Errors_And_Conflicts.html#offline-odata-conflicts">docs</A> an optimistic locking approach based on ETags is implemented in the offline api.</P> <P>I would like to test this and therefore I installed the sample app on two devices. After initial sync, I modified the same SalesOrderItem on both devices. Then I synchronized changes on the first device.<BR />When trying to sync on the second device, I expected a conflict due to a stale ETag, but the sync completed successfully and changes from the first device were overriden.</P> <P>Am I doing something wrong?</P> Thu, 15 Jul 2021 11:59:56 GMT https://community.sap.com/t5/application-development-and-automation-discussions/etag-checking-optimistic-locking-in-offline-odata-tutorial-for-android/m-p/12399202#M1995503 former_member756951 2021-07-15T11:59:56Z https://community.sap.com/t5/application-development-and-automation-discussions/etag-checking-optimistic-locking-in-offline-odata-tutorial-for-android/m-p/12399203#M1995504 <P>When querying the sample odata service, I cannot see any @odata.etag properties in the response. Therefore I think there is just no support for etags in the sample-odata-v2-espm service.<BR />Is it possible to use another odata service supporting etags with an trial account?</P> Thu, 15 Jul 2021 13:45:23 GMT https://community.sap.com/t5/application-development-and-automation-discussions/etag-checking-optimistic-locking-in-offline-odata-tutorial-for-android/m-p/12399203#M1995504 former_member756951 2021-07-15T13:45:23Z