How To Fix 1X055 - The structure type could not be activated

SAP Error Message - Details

• Message type: E = Error

• Message class: 1X - General hierarchy maintenance tool message

• Message number: 055

• Message text: The structure type could not be activated

What causes this issue?

A structure type can only be activated when all node types assigned
exist and are active.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 1X055 - The structure type could not be activated ?

  The SAP error message 1X055: "The structure type could not be activated" typically occurs when there are issues with the definition of a structure in the ABAP Dictionary. This error can arise due to various reasons, including inconsistencies in the structure definition, missing components, or issues with the underlying database.
  Causes:
  
  Inconsistent Structure Definition: The structure may have inconsistencies, such as incorrect data types or lengths.
  Missing Components: If the structure references other data elements or types that are not defined or activated, it can lead to this error.
  Database Issues: Problems with the underlying database, such as missing tables or fields, can also trigger this error.
  Transport Issues: If the structure was transported from another system and there were issues during the transport, it may not activate correctly.
  Authorization Issues: Lack of proper authorizations to activate the structure can also lead to this error.
  
  Solutions:
  
  
  Check Structure Definition:
  
  Go to the ABAP Dictionary (transaction SE11) and check the structure definition for any inconsistencies.
  Ensure that all components of the structure are correctly defined and activated.
  
  
  
  Activate Dependent Objects:
  
  If the structure references other objects (like data elements or domains), ensure that those objects are activated.
  
  
  
  Check for Transport Issues:
  
  If the structure was recently transported, check the transport logs for any errors or warnings that might indicate issues during the transport.
  
  
  
  Database Consistency:
  
  Ensure that the underlying database is consistent and that all necessary tables and fields exist.
  
  
  
  Authorization Check:
  
  Verify that you have the necessary authorizations to activate the structure. You may need to consult with your SAP security team.
  
  
  
  Recreate the Structure:
  
  If the issue persists, consider recreating the structure from scratch, ensuring that all components are correctly defined.
  
  
  
  Check SAP Notes:
  
  Look for any relevant SAP Notes that might address this specific error. Sometimes, there are known issues with specific versions of SAP that have been documented.
  
  
  
  Related Information:
  
  Transaction Codes: SE11 (ABAP Dictionary), SE14 (Database Utility), SE80 (Object Navigator).
  SAP Notes: Search the SAP Support Portal for notes related to error 1X055 for any specific patches or updates.
  Debugging: If you have access to debugging tools, you can use them to trace the activation process and identify where it fails.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or ABAP development team for further assistance.