Is there a way to prevent a user from entering the same transaction more than twice?

[SAPSupport]

Dear community

Is there a way to prevent a user from entering the same transaction more than twice?

Thank you for your help.

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[SAPSupport · Accepted solution]

There is no general / generic feature that would prevent a user from entering the same transaction more than twice (and I believe that you mean in parallel).

Something that could be used to somehow achieve that is to limit the number of SAP GUI windows that a user can open with the profile parameter "rdisp/max_alt_modes".

Also keep in mind the possibility of parallel logons (parameter "login/disable_multi_gui_login"), as "rdisp/max_alt_modes" is applied per session (logon), not per user ID.