How To Fix /PLMI/PPECMP373 - Reference of &1 &2 to &3 from &4 not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: /PLMI/PPECMP -

• Message number: 373

• Message text: Reference of &1 &2 to &3 from &4 not allowed

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 /PLMI/PPECMP373 - Reference of &1 &2 to &3 from &4 not allowed ?

  The SAP error message /PLMI/PPECMP373 Reference of &1 &2 to &3 from &4 not allowed typically occurs in the context of SAP's Project Management or Project System modules. This error indicates that there is an issue with the referencing of objects, such as projects, networks, or activities, which is not permitted according to the system's rules or configuration.
  Cause:
  
  Invalid Reference: The error usually arises when there is an attempt to reference an object (like a project or activity) that is not allowed due to the current configuration or status of the objects involved.
  Hierarchy Issues: The objects may not be in the correct hierarchical relationship, or the reference may violate the defined structure.
  Status Restrictions: The status of the referenced object may not allow for the operation being attempted (e.g., a project that is closed or archived).
  Configuration Settings: There may be specific settings in the project management configuration that restrict certain types of references.
  
  Solution:
  
  Check Object Status: Verify the status of the objects involved in the reference. Ensure that they are active and not in a closed or archived state.
  Review Hierarchical Structure: Ensure that the objects are correctly structured in the hierarchy. If necessary, adjust the hierarchy to allow for the reference.
  Consult Configuration: Review the configuration settings in the Project Management module to ensure that the referencing rules are correctly set up. This may involve checking the settings for project types, network types, or activity types.
  Use Valid References: Ensure that you are using valid references as per the system's requirements. This may involve checking documentation or consulting with a functional consultant.
  Error Documentation: Look up the specific error message in SAP's documentation or support notes for any additional context or specific resolutions that may apply to your situation.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like CJ20N (Project Builder) or CN41 (Project Structure Overview) to analyze the project structure and references.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Authorization: Ensure that you have the necessary authorizations to perform the actions you are attempting, as restrictions may also lead to this error.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in Project Management or Project System modules.