How To Fix 5P380 - Only one node is allowed on this hierarchy level

5P380 - Overview

• Message type: E = Error

• Message class: 5P - Error Messages for Schema, Pers.Calc.Rule and Feature Checks

• Message number: 380

• Message text: Only one node is allowed on this hierarchy level

What causes this issue?

Rules for the second hierarchy level:
- Just one node is allowed, but no error operations.
- If a main feature has field or table return, two nodes are allowed if
one node is a debugging operation.
- If a main feature has table return, a maximum of 36 nodes are
allowed if all of the nodes contain return lines, or a maximum of
35 return lines and just one debugging operation.
- A subfeature is allowed a maximum of 36 nodes if all of the nodes
contain return lines or program markers, or 35 and just one
debugging operation.

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 5P380 - Only one node is allowed on this hierarchy level ?

  The SAP error message 5P380, which states "Only one node is allowed on this hierarchy level," typically occurs in the context of hierarchical data structures, such as when working with organizational units, cost centers, or other hierarchical master data in SAP.
  
  Cause:
  This error usually arises when you attempt to create or modify a hierarchy where the system expects only one node (or entry) at a specific level, but you are trying to add multiple nodes. This can happen in scenarios such as:
  
  Attempting to create multiple entries at a level where the hierarchy is designed to allow only one (e.g., a parent node).
  Incorrectly configuring the hierarchy settings or structure in the system.
  Data inconsistencies or conflicts in the hierarchy setup.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Review Hierarchy Structure: Check the hierarchy structure you are trying to create or modify. Ensure that you are adhering to the rules of the hierarchy,