How To Fix /SAPAPO/PE120 - Class &1 of data manager &2 does not exist

/SAPAPO/PE120 - Overview

• Message type: E = Error

• Message class: /SAPAPO/PE -

• Message number: 120

• Message text: Class &1 of data manager &2 does not exist

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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/SAPAPO/PE120 - Details

• The SAP error message /SAPAPO/PE120 Class &1 of data manager &2 does not exist typically occurs in the context of SAP Advanced Planning and Optimization (APO) when the system is unable to find a specific class associated with a data manager. This can happen for various reasons, including configuration issues or missing data.
  
  Cause:
  
  Missing Class Definition: The class specified in the error message does not exist in the system. This could be due to a misconfiguration or an incomplete setup.
  Incorrect Data Manager Configuration: The data manager might be incorrectly configured, pointing to a class that is not defined or has been deleted.
  Transport Issues: If the system has recently undergone a transport of changes, the class may not have been transported correctly.
  Authorization Issues: Sometimes, the user may not have the necessary authorizations to access the class or data manager.
  
  
  Solution:
  
  
  Check Class Definition:
  
  Go to transaction CL02 (Class Maintenance) and check if the class specified