Administration of the SAP login data
The configured web services are listed in the SAP web service logins tab in the user settings. The user can enter his SAP login data here. Since version 4.3.5 it is possible to use these data in processes for the connection to the web service (instead of the communication user stored in the web service configuration).
Please note: The SAP user needs additional rights for the communication to the SAP web service

The SAP user name can be used in the dialog element JobLink for SAP as an input parameter with some of the BAPI modules. In the example of the JobLink for SAP Park vendor invoice module, the SAP user name is determined during execution using the JobRouter user name (parameter USERNAME) and passed to the BAPI as a value for the parameter USERNAME. Alternatively, you can enter the SAP user name in the parameter SAP_USERNAME. This value is then passed to the BAPI as the USERNAME parameter.

Please note: The variable jr_username can not be resolved in the JobLink for SAP system activity. It is possible to save the JobRouter user name in a process table field in a previous step and then use it to determine the SAP user name.
An SAP user name can be stated directly as well.