A line with a validation error or warning will be marked in the editor panel by underlining the error region with a red color. Also a red sign will mark the position in the document of that line on the right side ruler of the editor panel. The same will happen for a validation warning, only the color will be yellow instead of red.
The ruler on the right side of the document is designed to display the errors and warnings found during the validation process and also to help the user to locate them more easily. The ruler contains the following areas:
Clicking on a marker will highlight the corresponding text area in the editor. The error message is displayed both in the tool tip and in the error area on the bottom of the editor panel.
Status messages from every validation action are logged into the Console view.
If you want to see all the validation error messages grouped in a view you should run the action Validate which is available both on the toolbar and on the . This action collects all error messages in menuthe Problems view of the Eclipse platform if the validated file is in the current workspace or in a custom Oxygen view called Errors if the validated file is outside the workspace.