Controlling file access permissions
Further training in the area of authorization management
The IF_IDENTITY interface of the CL_IDENTITY class provides various methods for maintaining the fields of the user master record. As a template for the implementation of the BAdIs, you can use the CL_EXM_IM_IDENTITY_SU01_CREATE implementation example, which automatically populates the SU01 transaction's surname, space number, phone, email address, user group, billing number, and cost centre fields. This example implementation does not provide an external data source; the user name is set as the last name and fixed values are used for the other fields. At this point, you must complete the implementation, depending on your requirements. There are several possible data sources for the user master data that you can access from the BAdI.
Since a role concept is usually subject to periodic changes and updates, e.g. because new functions or modules are introduced or new organisational values are added, role names should be designed in such a way that they can be expanded. Therefore, in the next step, define the useful criteria you need in your role name.
Use automatic synchronisation in central user management
When you create users in the SU01 transaction, do you want to automatically pre-occupy certain fields from a data source? Use a new BAdI for which we present an implementation example. If you create a user in the SU01 transaction in an SAP system, there is almost always data about that user in other systems. A classic example is user data in the Active Directory or the personnel master data in SAP ERP HCM, which are already maintained as part of the employee recruitment process. If user data is present in multiple systems, then the first choice is to automatically create a user through an identity management system, which is resolved by an HR trigger in SAP Identity Management (ID Management). ID Management detects changes, such as personnel master data, SAP ERP HCM, or business partners in SAP CRM, and either applies the appropriate users in your systems or makes changes and deactivations. But what if you don't have an identity management system in place? Do you need to type all of this data? No - you can pre-document them automatically. You can use a Business Add-in (BAdI), which allows you to pre-define certain fields when you create a user in the SU01 transaction.
Once you have edited the role menu, you can customise the actual permissions in the PFCG role. To do this, click the Permissions tab. Depending on the quantity of external services from the Role menu, the authorization objects will appear. The authorization objects are loaded into the PFCG role, depending on their suggestion values, which must be maintained for each external service in the USOBT_C and USOBX_C tables. You can edit these suggested values in the SU24 transaction. Make sure that external services in the Customer Name Room also have the names of external services and their suggestion values in the tables maintained (see Tip 41, "Add external services from SAP CRM to the proposal values"). Visibility and access to external services is guaranteed by the UIU_COMP authorization object. This authorization object consists of three permission fields: COMP_NAME (name of a component), COMP_WIN (component window name), COMP_PLUG (inbound plug).
Authorizations can also be assigned via "Shortcut for SAP systems".
These are known as critical authorizations.
The website www.sap-corner.de offers a lot of useful information about SAP authorizations.
Therefore, if a permission error occurs, permission administrators must first check which application server the user is logged on to with the permission issue and then start the trace on that application server.