How To Fix R8344 - Hierarchy segement &1 is not compatible with reference structure &2

SAP Error Message - Details

• Message type: E = Error

• Message class: R8 - Messages from the meta data generation

• Message number: 344

• Message text: Hierarchy segement &1 is not compatible with reference structure &2

What causes this issue?

The header segment, node segment, and interval segment for a hierarchy
DataSource that supports loading using IDoc and PS, must be compatible
with the reference structure. That is, it must have fields that have
the same name and that are technically the same.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message R8344 - Hierarchy segement &1 is not compatible with reference structure &2 ?

  The SAP error message R8344, which states "Hierarchy segment &1 is not compatible with reference structure &2," typically occurs in the context of SAP's hierarchical data structures, such as those used in SAP BW (Business Warehouse) or in other modules that utilize hierarchical data.
  Cause:
  This error usually arises when there is a mismatch between the structure of the hierarchy segment being processed and the expected structure defined in the reference structure. The following are common causes for this error:
  
  Incompatible Data Types: The data types of the fields in the hierarchy segment do not match those defined in the reference structure.
  Missing Fields: The hierarchy segment may be missing required fields that are present in the reference structure.
  Field Length Issues: The length of the fields in the hierarchy segment may exceed or be less than the lengths defined in the reference structure.
  Incorrect Hierarchy Definition: The hierarchy segment may not be defined correctly according to the rules or standards set for the reference structure.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check the Hierarchy Segment: Review the definition of the hierarchy segment (e.g., in transaction codes like RSH1 for hierarchies) to ensure that it matches the reference structure in terms of fields, data types, and lengths.
  
  
  Compare with Reference Structure: Use transaction codes like RSH2 to view the reference structure and compare it with the hierarchy segment. Ensure that all required fields are present and correctly defined.
  
  
  Adjust Field Definitions: If you find discrepancies, adjust the field definitions in the hierarchy segment to match those of the reference structure. This may involve changing data types, adding missing fields, or modifying field lengths.
  
  
  Recreate the Hierarchy: If the hierarchy segment is significantly misconfigured, it may be easier to recreate it from scratch, ensuring that it adheres to the reference structure from the beginning.
  
  
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as sometimes bugs in earlier versions can lead to such errors.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on defining hierarchies and structures in your version of SAP.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSH1 (Hierarchy Maintenance), RSH2 (Hierarchy Structure), and SE11 (Data Dictionary) for checking data definitions.
  SAP Notes: Search for SAP Notes related to this error message in the SAP Support Portal, as there may be specific fixes or recommendations provided by SAP.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the error and implement the necessary changes to resolve it.