How To Fix MPE_OAN066 - Enter an end element for the OAN relationship

MPE_OAN066 - Overview

• Message type: E = Error

• Message class: MPE_OAN - Operation Activity Network Messages

• Message number: 066

• Message text: Enter an end element for the OAN relationship

Self-Explanatory Message

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MPE_OAN066 - Details

• The SAP error message MPE_OAN066, which states "Enter an end element for the OAN relationship," typically occurs in the context of managing object relationships in SAP, particularly when dealing with Object Assignment Numbers (OAN) in the SAP system.
  
  Cause:
  This error usually arises when you are trying to create or modify an OAN relationship without specifying an end element. In the context of OAN relationships, an "end element" refers to the object or entity that is at the end of the relationship. If this is not provided, the system cannot complete the relationship definition, leading to the error message.
  
  Solution:
  To resolve this error, you should:
  
  
  Check Input Fields: Ensure that you have filled in all required fields in the transaction or screen where you are defining the OAN relationship. Specifically, look for a field that specifies the end element of the relationship.
  
  
  Define End Element: If you are creating a new relationship, make sure to