As of Version 5.2.7, it is possible to derive and redefine the web service handler 3 (class /WMD/XF_WEBSERVICE_HANDLER_3). This is not recommended for the Web Service Handler 2.

The class derived is then entered into the transaction SICF in the service /sap/bc/wmd_web_service in the tab Handler List in the place of the default handler.

Individual security requirements can be implemented via a user exit. For example, a higher degree of security can be implemented or certain security measures can be weakened.

Note that interventions in the web service handler affect all requests from the SAP Fiori, xSuite Web and xSuite Mobile front ends. Therefore, special care is required in this context when developing user exits.

In particular, frequent writes to databases with a large number of queries should be avoided if possible. Otherwise, this can lead to degradation of performance and problems with the database.