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

SAP Error Message - Details

• Message type: E = Error

• Message class: /IAM/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 /IAM/CONFIG018 - Node cannot be created due to recursion ?

  The SAP error message /IAM/CONFIG018 Node cannot be created due to recursion typically occurs in the context of Identity Access Management (IAM) or similar configuration scenarios within SAP systems. This error indicates that there is an attempt to create a node (such as a role, user, or organizational unit) that would lead to a recursive relationship, which is not allowed.
  Cause:
  
  Recursive Relationships: The most common cause of this error is that the configuration you are trying to implement would create a circular reference. For example, if you are trying to create a role that includes itself as a sub-role or if a user is being assigned to a role that indirectly references itself.
  Incorrect Hierarchy: The hierarchy of roles or organizational units may be incorrectly defined, leading to a situation where a node points back to itself.
  Configuration Errors: There may be errors in the configuration settings or data entries that lead to this recursion.
  
  Solution:
  
  Review Configuration: Check the configuration of the nodes you are trying to create. Ensure that there are no circular references in the hierarchy. 
  Check Role Assignments: If you are working with roles, verify that roles are not assigned to themselves directly or indirectly.
  Modify Hierarchy: If you identify a recursive relationship, modify the hierarchy to eliminate the recursion. This may involve changing the parent-child relationships of roles or organizational units.
  Use Transaction Codes: Utilize relevant transaction codes (like PFCG for role maintenance) to review and adjust the role definitions and assignments.
  Consult Documentation: Refer to SAP documentation or notes related to IAM configuration for best practices and guidelines on setting up roles and nodes without causing recursion.
  
  Related Information:
  
  SAP Notes: Check for any SAP Notes that might address this specific error or provide additional context or solutions.
  System Logs: Review system logs for any additional error messages or warnings that might provide more insight into the issue.
  Testing: After making changes, test the configuration in a development or test environment before applying it to production to ensure that the issue is resolved without introducing new problems.
  
  If the problem persists after following these steps, consider reaching out to SAP support or consulting with an SAP expert who specializes in IAM configurations.