Message type: E = Error
Message class: /SAPAPO/AMON -
Message number: 015
Message text: Enter an existing system user
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/SAPAPO/AMON015
- Enter an existing system user ?The SAP error message /SAPAPO/AMON015 Enter an existing system user typically occurs in the SAP Advanced Planning and Optimization (APO) module when a user attempts to perform an action that requires specifying a valid system user, but the user ID entered does not exist in the system.
Cause: Non-Existent User ID: The user ID entered does not exist in the SAP system. User Deactivation: The user ID may exist but is deactivated or locked. Authorization Issues: The user may not have the necessary authorizations to access the required functionality. Input Error: There may be a typographical error in the user ID entered.
Solution: Verify User ID: Check the user ID you are entering to ensure it is correct. Look for any typos or incorrect characters. Check User Existence: Use transaction code SU01 to check if the user exists in the system. If the user does not exist, you may need to create a new user or use an existing one. User
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