How To Fix /SAPAPO/MAT818 - User is already assigned to a standard planner

/SAPAPO/MAT818 - Overview

• Message type: E = Error

• Message class: /SAPAPO/MAT -

• Message number: 818

• Message text: User is already assigned to a standard planner

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MAT818 - User is already assigned to a standard planner ?

  The SAP error message /SAPAPO/MAT818 indicates that a user is already assigned to a standard planner in the SAP Advanced Planning and Optimization (APO) module. This typically occurs when a user attempts to assign themselves or another user to a planner role that is already occupied.
  
  Cause:
  
  User Assignment Conflict: The user you are trying to assign is already linked to a standard planner in the system.
  Role Restrictions: The system restricts multiple users from being assigned to the same planner role to maintain data integrity and avoid conflicts in planning activities.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Current Assignments:
  
  Use transaction code /SAPAPO/SDP94 or /SAPAPO/PLN01 to check the current assignments of users to planners.
  Identify if the user is already assigned to a planner.
  
  
  
  Reassign Users:
  
  If the user needs to be assigned to a different planner, you may need to remove their current assignment first.
  Use transaction code /SAPAPO/PLN01 to manage planner assignments.