Determine Permissions Error by Debugging
Authorizations in SAP systems: what admins should look out for
The Permissions check continues again if the table in question is a client-independent table. This is done by checking the S_TABU_CLI authorization object, which decides on maintenance permissions for client-independent tables. For example, the T000 table is a table that is independent of the client and would be validated. To enable a user to maintain this table by using the SM30 transaction, you must maintain the S_TABU_CLI authorization object, in addition to the table permission group or specific table, as follows: CLIIDMAINT: X.
There are several ways to view the implementation of permission checks: Either you jump directly from the system trace for permissions to the appropriate locations in the programme code, or you go over the definition of the authorization objects. To view the permission checks from the permissions system trace, start the trace from the STAUTHTRACE transaction and run the applications you want to view. Now open the evaluation of the Trace. In the Programme Name column, you can see the programme that includes the Permissions Check. Double-click to go directly to the code site where the permission check is implemented.
Handle the default users and their initial passwords
For the scenario of sending initials passwords, signing emails is not so relevant. Although it is possible to send an encrypted e-mail with a fake sender address, in this case the initial passwords in the system would not work. It looks different when you send business data; In such cases, verification of the sender via a digital signature is recommended. If you want to send e-mails digitally signed, we advise you to send them at the system's e-mail address. To do this, use the SEND_EMAIL_FOR_USER method described and place the sender's tag on the system. In this case, you need a public key pair for your ABAP system, which is stored as a Personal System Security Environment (PSE). For a detailed description of the configuration, including for verification and decryption of received emails, see the SAP Online Help at http://help.sap.com/saphelp_nw73ehp1/helpdata/en/d2/7c5672be474525b7aed5559524a282/frameset.htm and SAP Note 1637415.
For even more extensive operations on jobs, there must be an authorization for object S_BTCH_ADM, in which the field BTCADMIN (identifier for the batch administrator) has the value 'Y'. This allows cross-client operations on any job. S_BTCH_ADM with value 'Y' thus also contains the objects S_BTCH_JOB action * and S_BTCH_NAM and S_BTCH_NA1 with user/program = *. Therefore, this is a very critical authorization because it allows an identity change. With the changes mentioned in note 1702113, the S_BTCH_ADM object can be used to restrict the authorization assignment more precisely.
The possibility of assigning authorizations during the go-live can be additionally secured by using "Shortcut for SAP systems".
To automatically check the security level of your systems, you should also schedule this calculation as a background job.
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Access to system tables should therefore be restricted to basic administration if possible.