How To Fix AO579 - Using a reference is not possible since project &1 already exists

AO579 - Overview

• Message type: E = Error

• Message class: AO - Appropriation requests - Master data / Customizing

• Message number: 579

• Message text: Using a reference is not possible since project &1 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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message AO579 - Using a reference is not possible since project &1 already exists ?

  The SAP error message AO579 indicates that you are trying to create or reference a project that already exists in the system. This typically occurs in the context of project management within SAP, particularly when dealing with project definitions or structures in the Project System (PS) module or the Investment Management (IM) module.
  
  Cause:
  The error occurs when:
  
  You attempt to create a new project using a reference project that has the same project ID or number as an existing project.
  The system does not allow the duplication of project IDs to maintain data integrity and avoid confusion in project tracking and reporting.
  
  
  Solution:
  To resolve the AO579 error, you can take the following steps:
  
  
  Check Existing Projects: 
  
  Verify if the project you are trying to create already exists in the system. You can do this by using transaction codes like CJ20N (Project Builder) or CJ03 (Display Project) to search for the project ID.
  
  
  
  Use a Different Project