Maintaining External
Commands
You can create, display, change, delete, rename, and copy external commands. SAP commands cannot, however, be changed in customer systems.
External commands can only be processed individually. For example, you cannot delete several external commands at the same time. External commands cannot be used by multiple users simultaneously.
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1. Choose CCMS → Configuration → External Commands, or call transaction SM69.
2. You can then display or change the external commands. To display a list of all external commands defined in the system, choose Display « Change.
External commands are uniquely identified by a user-definable logical name and an operating system.
3. You can specify the name of an ABAP function module which, at the time of execution, decides whether the specific command should be executed or not. The interface to this check module must be the same as for the check module SXPG_DUMMY_COMMAND_CHECK delivered by SAP.

SAP recommends that you copy SXPG_DUMMY_COMMAND_CHECK before using it. Do not change this function module in your system.

Command names beginning with ‘X’ or ‘Z’ are reserved for customer commands.
See also:
What Information Is Displayed?