How To Fix COM_HIERARCHY801 - Internal error: Hierarchy &1 was not written to the buffer

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_HIERARCHY - Hierarchy

• Message number: 801

• Message text: Internal error: Hierarchy &1 was not written to the buffer

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message COM_HIERARCHY801 - Internal error: Hierarchy &1 was not written to the buffer ?

  The SAP error message COM_HIERARCHY801 indicates an internal error related to the hierarchy not being written to the buffer. This error typically occurs in the context of SAP's Controlling (CO) module, particularly when dealing with hierarchies in Profit Center Accounting or Cost Center Accounting.
  Cause:
  The error can be caused by several factors, including:
  
  Data Inconsistency: There may be inconsistencies in the hierarchy data that prevent it from being processed correctly.
  Buffer Issues: The internal buffer that stores hierarchy data may be corrupted or not properly initialized.
  Authorization Issues: The user may not have the necessary authorizations to access or modify the hierarchy.
  System Bugs: There could be a bug in the SAP system or a specific transaction that leads to this error.
  Configuration Issues: Incorrect configuration settings in the hierarchy setup can also lead to this error.
  
  Solution:
  To resolve the COM_HIERARCHY801 error, you can try the following steps:
  
  
  Check Hierarchy Data:
  
  Verify the integrity of the hierarchy data. Ensure that all nodes and relationships are correctly defined and that there are no missing or inconsistent entries.
  
  
  
  Clear Buffer:
  
  You can try to clear the buffer for the hierarchy. This can sometimes resolve issues related to stale or corrupted data in the buffer.
  Use transaction code SE38 to run the report RS_HIERARCHY_BUFFER_CLEAR to clear the hierarchy buffer.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access and modify the hierarchy. You can check this in transaction SU53 after the error occurs.
  
  
  
  Review Configuration:
  
  Review the configuration settings for the hierarchy in the relevant customizing transactions (e.g., OKT2 for cost center hierarchy).
  Ensure that all settings are correct and consistent with the business requirements.
  
  
  
  Check for Notes and Patches:
  
  Look for SAP Notes related to this error message. SAP frequently releases notes that address known issues and bugs. You can search for relevant notes in the SAP Support Portal.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including the transaction codes used and any relevant logs.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as KSH1 (Create Cost Center), KSH2 (Change Cost Center), and KSH3 (Display Cost Center) to manage hierarchies.
  SAP Notes: Regularly check the SAP Support Portal for updates and notes related to hierarchy management and error messages.
  Documentation: Review SAP documentation on hierarchy management in the CO module for best practices and troubleshooting tips.
  
  By following these steps, you should be able to diagnose and resolve the COM_HIERARCHY801 error effectively.