The user interface of the error pages is represented by an HTML file that takes all required information from a default properties file. To specify your custom look and feel of the default error pages, you have to provide a new properties file, for example your_file.properties , and replace the existing one.
Edit the default properties file and save it with a different name. Change the values of the keys, save the new file, and replace the default one. To do that you have to edit the ErrorPageTemplateLocation property using SAP NetWeaver Administrator and provide the location of the file with the new look and feel.
Implementing a new properties file to replace the existing one
Open the original property file errorPageFragments.properties in \usr\sap\<sid>\<instanceid>\j2ee\cluster\bin\services\http\lib\private and save it using a different name. This file contains key value pairs. To change the user interface, you have to edit only the corresponding values.
Do not delete any keys. If you do not want to use any of the key value pairs, leave the value empty without removing the key.
Replacing the existing properties file with a custom one
After implementing your own properties file, you have to replace the existing one.
Open the SAP NetWeaver Administrator.
Choose Templates section.. Specify the template in the
Choose the Services tab in the Details section.
Choose the HTTP Provider service.
Select the ErrorPageTemplateLocation property in the Extended Details section. Choose Modify .
Specify the location of the file that contains the new user interface. Choose Set and then Save .