PSC licenses.
The Planning and Scheduling Console requires a valid license in order to function. Since this is a demonstration version, it will only function for a limited number of actions. Once the pre-designated number of screens has been reached, PSC will display the following message in the SAP statusline:
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Note: To continue using the demo version after this message display, log out and log back into the PSC.
A purchased version of the PSC will include a valid license and so this message will not occur.