SAP Authorizations Unclear objectives and lack of definition of own security standards - NW Admin

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Unclear objectives and lack of definition of own security standards
Check for permissions on the old user group when assigning a new user group to a user
Historically grown authorization structures can be found especially in system landscapes that have been in operation for a long time. Instead of small, modular, job-specific roles, existing roles are continually expanded and assigned to different employees in different departments. While this leads to less administrative work in the short term, it causes the complexity of the role to increase massively over time. As a result, the efficiency of authorization development is increasingly lost.

Many companies are currently converting their current SAP systems from an ERP state to an SAP S/4HANA system. Through this conversion, many technical and also organizational components come upon the respective companies. The time factor for determining, organizing and implementing the necessary components should not be underestimated. The area of security is often neglected in thought, but can lead to major problems and possibly image-related damage - and resulting financial losses - in retrospect. For this reason, the implementation of a comprehensive authorization concept should be considered as early as possible in the project phase, as several components are intertwined here.
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If you want your own developments to meet your security requirements, just like the standard, you must assign table permission groups to the custom tables. Custom tables, or SAP standard tables that you want to protect in particular, belong to separate, if applicable, customer-specific table permission groups. If extensive permissions are to be granted for system administration or certain applications, this is done with the S_TABU_DIS authorization object for the table permission group. Since many standard tables do not have a table permission group assigned to them and therefore automatically end up in the table permission group &NC&, you should restrict access to this table permission group. For example, certain tables such as T000 (clients) are in a large table permission group (SS: RS: SAP control); therefore, it is better to restrict access via a separate table permission group. You should also always assign custom tables to a table permission group, otherwise they will also be assigned the table permission group &NC&. Therefore, we will explain below how you can create table permission groups and map tables.

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If an entry in transaction SE97 is correctly created, a permission check is performed in the same way as a transaction startup authorisation. This approach therefore requires an exact and complete configuration for each transaction that is invoked. The required effort and the space for errors are correspondingly large. The CALL TRANSACTION ABAP command does not cause a transaction startup permission check. Without a permission check, the ABAP programme could unintentionally allow users to access system resources. In many cases, such authorisation problems lead to a hidden compliance violation, because this means that the traceability of user actions in the SAP system is no longer guaranteed. A developer should not rely on the functionality of the SE97 transaction and therefore should include the possible permission checks in the code. Therefore, one of the following explicitly coded permission checks for the CALL TRANSACTION statement must be performed.

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".

Different project teams can implement and use several modules, processes or add-ons in a short time.

In a redesign, we follow the principle of job-related workstation roles to technically map the job profile of the employees.
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