How To Fix /SAPAPO/MC01021 - Reference field structure does not exist: & &

/SAPAPO/MC01021 - Overview

• Message type: E = Error

• Message class: /SAPAPO/MC01 -

• Message number: 021

• Message text: Reference field structure 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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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MC01021 - Reference field structure does not exist: & & ?

  The SAP error message /SAPAPO/MC01021 Reference field structure does not exist: & & typically occurs in the context of SAP Advanced Planning and Optimization (APO) when the system is unable to find a specific reference field structure that is required for a particular operation or transaction. This can happen for various reasons, including configuration issues, missing data, or inconsistencies in the system.
  Causes:
  
  Missing Configuration: The reference field structure may not be defined in the system. This can happen if the necessary configuration steps were not completed during the setup of the APO system.
  Incorrect Data: The data being processed may reference a field structure that does not exist or has been deleted.
  Transport Issues: If the system has recently undergone a transport of changes, the reference field structure may not have been included or properly activated.
  Version Compatibility: There may be compatibility issues between different versions of SAP or between different components of the