How To Fix /SAPAPO/DMRES851 - An identical entry already exists

/SAPAPO/DMRES851 - Overview

• Message type: E = Error

• Message class: /SAPAPO/DMRES -

• Message number: 851

• Message text: An identical entry already exists

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/DMRES851 - An identical entry already exists ?

  The SAP error message /SAPAPO/DMRES851 indicates that there is an attempt to create or modify a resource in the SAP Advanced Planning and Optimization (APO) module, but an identical entry already exists in the system. This can occur in various contexts, such as when working with resources, production planning, or master data.
  
  Cause:
  
  Duplicate Entry: The most common cause is that the resource you are trying to create or modify already exists in the system with the same key attributes (e.g., resource ID, description).
  Data Import Issues: If you are importing data from an external system or file, there may be duplicates in the data being imported.
  Configuration Errors: Incorrect configuration settings or data model issues can lead to attempts to create duplicate entries.
  
  
  Solution:
  
  Check Existing Entries: Before creating a new resource, check the existing resources in the system to ensure that the entry does not already exist. You can do this by using transaction