How To Fix CO156 - User & is not defined

CO156 - Overview

• Message type: E = Error

• Message class: CO - PPC order processing messages

• Message number: 156

• Message text: User & is not defined

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 CO156 - User & is not defined ?

  The SAP error message CO156 ("User & is not defined") typically occurs in the context of controlling (CO) or production planning (PP) modules when a user is referenced in a transaction or configuration but is not defined in the system. This can happen in various scenarios, such as when trying to assign a user to a cost center, internal order, or other controlling objects.
  
  Cause:
  
  User Not Defined: The user ID referenced in the transaction does not exist in the SAP user master data.
  Authorization Issues: The user may exist, but the necessary authorizations to access the relevant data or transaction are not granted.
  
  Configuration Issues: There may be a configuration issue where the user is not properly assigned to the relevant organizational units or roles.
  
  
  Solution:
  
  
  Check User Master Data:
  
  Go to transaction code SU01 (User Maintenance) and check if the user ID exists.
  If the user does not exist, create a new user with the necessary