How To Fix DMU130 - Node &1 is still used in structures

SAP Error Message - Details

• Message type: E = Error

• Message class: DMU - Digital Mock Up (DMU)

• Message number: 130

• Message text: Node &1 is still used in structures

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMU130 - Node &1 is still used in structures ?

  The SAP error message DMU130, which states "Node &1 is still used in structures," typically occurs in the context of data model changes, particularly when you are trying to delete or modify a node in a data model that is still being referenced in other structures or objects.
  Cause:
  The error arises when you attempt to delete or modify a node (like a characteristic or a hierarchy node) that is still being used in one or more structures, such as InfoObjects, InfoProviders, or other data models. This is a safeguard mechanism in SAP to prevent the accidental loss of data integrity.
  Solution:
  To resolve this error, you need to identify where the node is being used and take appropriate actions. Here are the steps you can follow:
  
  
  Identify Dependencies:
  
  Use the SAP transaction code RSD1 (for InfoObjects) or RSA1 (for Data Warehousing Workbench) to check where the node is being used.
  Look for any InfoProviders, queries, or other structures that reference the node.
  
  
  
  Remove References:
  
  Once you have identified the structures that are using the node, you will need to either:
  
  Remove the node from those structures.
  Modify the structures to no longer depend on the node.
  
  
  
  
  
  Check for Active Queries:
  
  Ensure that there are no active queries or reports that are using the node. If there are, you may need to deactivate or modify those queries.
  
  
  
  Re-attempt the Change:
  
  After ensuring that the node is no longer referenced, you can attempt to delete or modify the node again.
  
  
  
  Transport Changes:
  
  If you are working in a development environment, ensure that any changes are properly transported to the quality and production environments.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSD1, RSA1, and SE11 (for Data Dictionary) to navigate through the data model and structures.
  Documentation: Refer to SAP documentation or help files for more detailed information on data modeling and the implications of modifying nodes.
  Testing: After making changes, conduct thorough testing to ensure that the integrity of the data model is maintained and that no unintended consequences arise from the changes.
  
  By following these steps, you should be able to resolve the DMU130 error and successfully modify or delete the node in question.