How To Fix 5P378 - A maximum of two nodes are permitted on this hierarchy level

5P378 - Overview

• Message type: E = Error

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

• Message number: 378

• Message text: A maximum of two nodes are permitted 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 5P378 - A maximum of two nodes are permitted on this hierarchy level ?

  The SAP error message 5P378, which states "A maximum of two nodes are permitted on this hierarchy level," typically occurs in the context of SAP's hierarchical data structures, such as in the SAP Business Warehouse (BW) or in other modules that utilize hierarchical data representations.
  
  Cause:
  This error arises when you attempt to create or modify a hierarchy in such a way that it exceeds the allowed number of nodes (in this case, more than two) at a specific level of the hierarchy. This limitation is often set to maintain the integrity and performance of the hierarchy structure.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Hierarchy Structure: Check the current hierarchy structure to understand how many nodes are already present at the level where you are trying to add a new node. 
  
  
  Limit Nodes: If there are already two nodes at that level, you will need to either:
  
  Remove one of