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

R8344 - Overview

• 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.

R8344 - Details

• 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