How To Fix DMEE008 - Node &2: level &1 does not have a unique base node

SAP Error Message - Details

• Message type: E = Error

• Message class: DMEE - Messages for Data Medium Exchange Engine

• Message number: 008

• Message text: Node &2: level &1 does not have a unique base node

English version rewritten!

What causes this issue?

The new level &V1& starts with node &V2&. You have inserted another
node as a same-level node directly beneath node &V2&, and not as a
subnode. However, the first node of a new level can only have subnodes
directly beneath it.

System Response

The system cannot activate the format tree.

How to fix this error?

Insert a segment group as the starting node for level &V1&. You can
then insert the segments of this level as subnodes of the segment
group. &SYS_ADMIN&

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message DMEE008 - Node &2: level &1 does not have a unique base node ?

  The SAP error message DMEE008 indicates that there is an issue with the Data Medium Exchange Engine (DMEE) configuration, specifically related to the structure of the DMEE tree. The error message reads: "Node &2: level &1 does not have a unique base node." This typically occurs when the DMEE tree structure is not properly defined, leading to ambiguity in the hierarchy of nodes.
  Cause:
  
  Non-Unique Base Nodes: The error arises when a node at a certain level does not have a unique base node. This means that there are multiple nodes at the same level that could serve as the base node, which confuses the DMEE processing logic.
  Incorrect Configuration: The DMEE tree may have been incorrectly configured, leading to overlapping or duplicate nodes at the same level.
  Hierarchy Issues: The hierarchy of nodes may not be properly defined, causing conflicts in how the nodes relate to one another.
  
  Solution:
  
  
  Review DMEE Tree Structure:
  
  Go to the DMEE transaction (usually transaction code DMEE).
  Open the relevant DMEE tree and examine the structure.
  Ensure that each node at the specified level has a unique base node.
  
  
  
  Adjust Node Properties:
  
  For the node indicated in the error message, check its properties and ensure that it is correctly defined.
  If there are multiple nodes at the same level, consider consolidating them or adjusting their hierarchy to ensure uniqueness.
  
  
  
  Test Changes:
  
  After making adjustments, test the DMEE configuration to ensure that the error no longer occurs.
  You can do this by running the relevant DMEE process that was previously failing.
  
  
  
  Documentation and Support:
  
  Refer to SAP documentation for DMEE configuration for best practices.
  If the issue persists, consider reaching out to SAP support or consulting with a colleague who has experience with DMEE configurations.
  
  
  
  Related Information:
  
  Transaction Codes: DMEE (Data Medium Exchange Engine), SE11 (Data Dictionary), SE80 (Object Navigator).
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on DMEE configurations.
  Best Practices: Familiarize yourself with best practices for designing DMEE trees to avoid similar issues in the future.
  
  By following these steps, you should be able to resolve the DMEE008 error and ensure that your DMEE configuration is functioning correctly.