The Designer supports you during modeling by validating the service, displaying messages for invalid implementations, and giving you advice on how to fix these errors.
The validation results are displayed in the Validation panel. It is available in all editors: If you use the panel preset, the validation panel is the second tab in the lower left corner. To return to the panel preset, go to the user preferences, open the Designer Options and select option Reset Panels. Refer to Customizing Editors and Panels for detailed information about panel management in general. In the Validation panel, validation findings of a service are displayed. The icon in the panel header indicates if there are any validation issues: There are validation issues. You need to resolve these issues before being able to test or deploy the service. The list is sorted by error types: You cannot test or deploy a service that still has validation errors. You need to resolve them first.
Everything is fine. The service is ready to be executed in the test environment or to be deployed via the service details page. 
The validation is in progress. Wait to get the result. 
Error: xUML Compiler errors
Warning: xUML Compiler warnings
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