How To Fix /SAPAPO/MAT816 - User already assigned because he or she has all planning rights

/SAPAPO/MAT816 - Overview

• Message type: E = Error

• Message class: /SAPAPO/MAT -

• Message number: 816

• Message text: User already assigned because he or she has all planning rights

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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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MAT816 - User already assigned because he or she has all planning rights ?

  The SAP error message /SAPAPO/MAT816 indicates that a user is already assigned to a particular planning area or has all planning rights, which prevents them from being assigned again. This error typically occurs in the context of SAP Advanced Planning and Optimization (APO) when trying to assign a user to a planning area or when managing user authorizations.
  
  Cause:
  
  User Already Assigned: The user you are trying to assign is already assigned to the planning area or has been granted all planning rights.
  Authorization Issues: The user may have broader authorizations that encompass the planning area, leading to this message.
  System Configuration: The configuration of the planning area may not allow for multiple assignments or may have specific rules regarding user assignments.
  
  
  Solution:
  
  
  Check User Assignments:
  
  Go to the transaction code /SAPAPO/USER or the relevant transaction for user assignments in your system.
  Verify if the user is already assigned to the planning area in question.
  
  
  
  Review User Authorizations:
  
  Check the