As of Release 4.0A, system message no. ME 550 is available.
Depending on the setting in Customizing, it appears as a warning or error message if the user creates a purchase requisition with account assignment category for a stock material. In this case, the user is advised that he or she should not create a purchase requisition for this material, but a reservation instead.
The message does not appear in the standard system. If you wish, you casn set it up as a warning or an error message.
For more information, refer to the IMG Define attributes of system messages.