Temporarily disable Central User Management
Advantages of authorization tools
The passwords of the users are stored in the SAP system as hash values. The quality of the hash values and thus their safety, however, depends on the hash algorithms used. The hash algorithms previously used in SAP systems are no longer considered safe; They can be cracked in a short time using simple technical means. You should therefore protect the passwords in your system in various ways. First, you should severely limit access to the tables where the hash values of the passwords are stored. This applies to the USR02 and USH02 tables and in more recent releases the USRPWDHISTORY table. The best way to assign a separate table permission group to these tables is to do so, as described in Tip 55, "Maintain table permission groups". In addition, you should also control the accesses using the S_TABU_NAM authorization object.
Step 2d (Show Modified Transaction Codes) lists all roles that have been found to use an old transaction code. Sometimes, new transaction codes replace old transaction codes. In this step you have the option to exchange the transaction codes. Once you have completed the upgrade of the Eligibility proposal values, you will be given the option in Step 3 (Transport of the Customer Tables). Transport your permissions suggestions in your system landscape.
Customising User and Permissions Management
A temporary shutdown of Central User Management is usually not recommended. However, in certain cases it may be necessary. We will show you what pre- and post-processing is required to avoid data inconsistencies. In complex SAP landscapes where the Central User Administration (ZBV) is used, there may be cases where you want to temporarily remove a subsidiary system from the ZBV without having to delete this system or shut down the entire ZBV, for example if you want to create users in a subsidiary system at short notice.
When programming your permission check, always check the SY-SUBRC return code and define what should happen in the event of a non-successful permission check, i.e. if SY-SUBRC is not equal to 0. In most cases, an error message occurs and the programme is cancelled.
For the assignment of existing roles, regular authorization workflows require a certain minimum of turnaround time, and not every approver is available at every go-live. With "Shortcut for SAP systems" you have options to assign urgently needed authorizations anyway and to additionally secure your go-live.
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are displayed, which can then be processed directly with a click.
, you need to verify that the relevant tables may be provided through other transactions.