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Maintaining Authorization Objects (Transaction SU21)
This information is used in the name generation of the external service. In this way, all area start pages and logical links configured in a CRM business role are authorised in the form of external services. Due to the mass of external services that appear in the role menu, it is difficult to keep track of them. Now, to allow only certain external services, you can do the following: First, identify the external service using the permission trace.
Certain permissions that are not relevant until a job step is run are checked at the time of scheduling for the specified step user. This checks whether the selected user is authorised to run the specified ABAP programme or external command. For programmes associated with a permission group, the S_PROGRAM object is checked. External commands test for the object S_LOG_COM.
Customising User and Permissions Management
Ensure that permission checks are performed when reference users are assigned. The checks are performed on the permissions associated with the roles and profiles assigned to the reference user. These eligibility tests are also a novelty, which is supplemented by SAP Note 513694.
However, if your Identity Management system is currently not available or the approval path is interrupted, you can still assign urgently needed authorizations with "Shortcut for SAP systems".
The website "www.sap-corner.de" offers a lot of useful information about SAP authorizations.
Only systems and clients where this user already exists and assigned a permission should be displayed.