SAP Fiori Lessons Learned 11
Consultants should know about OData troubleshooting
SAP Fiori apps are out of the solution but you face several issues because main functions are in backend ERP and each customer has different backend setup/configuration. OData is the communication channel to the backend servers via get/post/put method.
Understanding OData and backend function are must requirements for consultants.
- Application consultants should learn about OData technical and runtime behavior
- Technical consultants should learn about ERP application functions
- Both application consultants and technical consultants should work together
Consultants should know following steps.
Step 1. Identity the OData service call
1.1 Run the app
1.2 Inspect element
Right click -> Inspect element (Chrome), F12 (IE), then go to Network tab
Ignore the warning or error message in the Console tab at this point in time. Focus on OData troubleshooting.
1.3 Refresh the app or browser
1.4 Find the last called OData URI
Scroll down to the bottom of inspect element and find the OData /sap/opu/odata/sap/.. from bottom.
Step 2. Test OData in the Gateway client
2.1 Copy & Paste the OData URI
Transaction: /IWFND/GW_CLIENT. You should logon with the application user same as Fiori app logon.
2.1 Check the OData response
If http response is not 200, you may have some connection setting issue.
If tttp response is 200 but OData service does not return application data, you should go Step.5 debug section.
Step 3. Check error log
3.1 Transaction /IWFND/ERROR_LOG
Select the “Error Context”
Call Stack helps you to set external break points.
3.2 Transaction /IWFND/APPS_LOG
Reference: Troubleshooting a SAP Netweaver Gateway Service
Step 4. Find the Runtime Data Provider class
4.1 Transaction /IWFND/MAINT_SERVICE
4.2 Transaction SE24
Open the Data Provider Class. Go to Property tab.
4.3 Transaction SE80
Open the package.
Class -> Runtime Data Provider Class -> Method -> Redefinitions
The example OData URI has &expand oprion, so you should look at the method GET_EXPANDED_ENTITY.
Step 5. Set External break points and debug
5.1 Check the user
Go to Utilities -> Settings
Make sure the user is application user.
5.2 Set external break points
Test the OData URI from Gateway Client. You can now debug the code. Most of case, issue is related with ERP customizing or master data.
Each customer has different customizing setting and master data.
SAP Rapid Innovation Group – RIG