How To Fix MSG_UH271 - Line &1: Number of ref nodes of node &2 and node &3 are different.

SAP Error Message - Details

• Message type: E = Error

• Message class: MSG_UH - Universal Hierarchy Message Class

• Message number: 271

• Message text: Line &1: Number of ref nodes of node &2 and node &3 are different.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MSG_UH271 - Line &1: Number of ref nodes of node &2 and node &3 are different. ?

  The SAP error message MSG_UH271 indicates that there is a mismatch in the number of reference nodes between two nodes in a hierarchical structure. This typically occurs in the context of SAP's data structures, such as when dealing with hierarchical data in the SAP system, particularly in areas like master data management, product hierarchies, or organizational structures.
  Cause:
  The error arises when the system expects a certain number of reference nodes (children or related nodes) for a given parent node, but finds a different number for the specified nodes. This can happen due to:
  
  Data Inconsistency: There may be inconsistencies in the data where one node has been updated or changed without corresponding updates to related nodes.
  Configuration Issues: Incorrect configuration settings in the hierarchical structure can lead to mismatches.
  Data Migration Issues: If data has been migrated from another system or during an upgrade, the hierarchical relationships may not have been preserved correctly.
  Manual Errors: Manual entry errors when creating or modifying nodes in the hierarchy.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Hierarchical Structure: Review the hierarchical structure of the nodes involved (node &2 and node &3) to ensure that they are correctly defined and that the number of reference nodes matches.
  
  
  Data Validation: Validate the data for both nodes to ensure that they have the correct number of reference nodes. You may need to compare the nodes in question to see where the discrepancy lies.
  
  
  Adjust Configuration: If the issue is due to configuration, adjust the settings in the relevant configuration area to ensure that the expected number of reference nodes is consistent.
  
  
  Data Correction: If there are inconsistencies in the data, correct them by adding or removing reference nodes as necessary to ensure that both nodes have the same number of references.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on the hierarchical structure you are working with, as there may be specific rules or constraints that apply.
  
  
  Use Transaction Codes: Utilize relevant transaction codes (like SE11 for data dictionary, SE80 for object navigator) to analyze the structure and relationships of the nodes.
  
  
  Seek Support: If the issue persists, consider reaching out to SAP support or your internal SAP team for further assistance, especially if this is affecting critical business processes.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to hierarchical data management, such as SE11 (Data Dictionary), SE80 (Object Navigator), or specific transaction codes for the module you are working with.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Documentation: Review SAP Help Portal for documentation on hierarchical data structures and best practices for maintaining data integrity.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.