How To Fix /MOC/CONFIG018 - Node cannot be created due to recursion

SAP Error Message - Details

• Message type: E = Error

• Message class: /MOC/CONFIG -

• Message number: 018

• Message text: Node cannot be created due to recursion

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /MOC/CONFIG018 - Node cannot be created due to recursion ?

  The SAP error message /MOC/CONFIG018 Node cannot be created due to recursion typically occurs in the context of the SAP Master Object Configuration (MOC) or similar configuration scenarios where a node in a hierarchy is being created or modified. This error indicates that there is an attempt to create a node that would lead to a recursive relationship, which is not allowed.
  Cause:
  
  Recursive Hierarchy: The most common cause of this error is that the node you are trying to create or modify is attempting to reference itself directly or indirectly, leading to a circular reference in the hierarchy.
  Incorrect Configuration: There may be an issue with the configuration settings that define the relationships between nodes, causing the system to detect a potential recursion.
  Data Integrity Issues: Existing data may have inconsistencies that lead to recursive relationships when new nodes are added.
  
  Solution:
  
  Check Node Relationships: Review the relationships of the nodes you are trying to create or modify. Ensure that the new node does not point back to itself or create a circular reference with existing nodes.
  Modify Hierarchy: If you find that the hierarchy is incorrectly set up, you may need to adjust the parent-child relationships to eliminate the recursion.
  Data Validation: Validate the existing data in the hierarchy to ensure there are no existing recursive relationships that could be causing the issue.
  Use Transaction Codes: Utilize relevant transaction codes (like /MOC/CONFIG or others related to your specific configuration) to analyze and correct the hierarchy.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on configuring nodes and avoiding recursion.
  Testing: After making changes, test the configuration to ensure that the error does not reoccur.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Community Forums: Engage with SAP community forums or support channels where other users may have encountered and resolved similar issues.
  System Logs: Review system logs for additional error messages or warnings that may provide more context about the recursion issue.
  
  If the problem persists after following these steps, it may be beneficial to reach out to SAP support for further assistance.