Use
The communication user SAPJSF is used during the user authentication that takes place between the JEEE Security service and the SAP Web Application Server by RFC communication.
During the installation of the SAP Web Application Server and/or the activation of the J2EE Engine, the communication user is automatically created and received the role SAP_BC_JSF_COMMUNICATION_RO. This means that the user has only read access to all user data and can. The role contains the authorization with which the communications user can authenticate the end user.
During the installation or activation of the SAP J2EE Engine, the system prompts you to specify a password for the communication user. The communication user is then automatically created.
Prerequisites
You have user administrator authorization in the SAP Web Application Server (use of transaction SU01). If you want to use the function module, you require the authorizations for testing function modules.
Checking the Communication User
After the installation/activation, check whether the communication user, its role, and the generated profile were created correctly.
The system displays the screen User Maintenance: Initial Screen.
Creating the Communication User Manually
If you discovered errors when checking the communication user, you have two options for creating the user and the role.
With Role Maintenance Transaction PFCG and User Maintenance Transaction SU01
You can create the
role and the communication user manually in the SAP Web Application Server.
The system displays the screen User Maintenance: Initial Screen.
generated profile.
With a Function Module
The system displays the screen Test Function Module: Initial Screen.

If you are using multiple logical systems (clients) of the SAP system, create a separate communication user in each of these logical systems.