How To Fix /SAPAPO/OM_ERROR238 - An edge of this type already exists between the two I/O nodes

/SAPAPO/OM_ERROR238 - Overview

• Message type: E = Error

• Message class: /SAPAPO/OM_ERROR -

• Message number: 238

• Message text: An edge of this type already exists between the two I/O nodes

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_ERROR238 - An edge of this type already exists between the two I/O nodes ?

  The SAP error message /SAPAPO/OM_ERROR238 indicates that there is an attempt to create an edge (a connection) between two I/O nodes in the SAP Advanced Planning and Optimization (APO) system, but an edge of that type already exists. This typically occurs in the context of supply chain planning, where nodes represent various entities (like suppliers, production facilities, or distribution centers) and edges represent the relationships or connections between them.
  
  Cause:
  
  Duplicate Edge Creation: The most common cause of this error is that the system is trying to create a connection (edge) between two nodes that already have an existing connection of the same type.
  Data Integrity Issues: There may be inconsistencies or errors in the master data that define the nodes and their relationships.
  Configuration Errors: Incorrect configuration settings in the APO system can lead to attempts to create duplicate edges.
  
  
  Solution:
  
  Check Existing Connections: Review the existing connections between the two I/O nodes in the