To lock or unlock client, use transaction SE37
For this operation use functional modules:
1. SCCR_LOCK_CLIENT (to lock the client)
2. SCCR_UNLOCK_CLIENT (to unlock the client)
This function module is used to lock / unlock client from logins. When you lock a client, all users try to log on will see a message "The client is locked against logon" A client will be available for entry only available to users SAP* and DDIC.
To unlock:
1. Run transaction SE37
2. Enter the name of the module c
3. Press F8 to activate
4. Enter the number of client and press (F8).
To lock the procedure is the same, only with the module SCCR_LOCK_CLIENT
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