How To Fix /PRA/PN053 - At least one PPN is closed. Comments can not be changed on Closed PPNs

/PRA/PN053 - Overview

• Message type: E = Error

• Message class: /PRA/PN -

• Message number: 053

• Message text: At least one PPN is closed. Comments can not be changed on Closed PPNs

Self-Explanatory Message

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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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/PRA/PN053 - Details

• The SAP error message /PRA/PN053 indicates that you are trying to change comments on a closed Project Network (PPN). In SAP, a Project Network can be closed for various reasons, such as project completion or administrative decisions, and once closed, certain modifications, including comments, are restricted to maintain data integrity.
  
  Cause:
  The error occurs because:
  
  The Project Network (PPN) you are trying to modify is in a closed status.
  SAP restricts changes to closed PPNs to prevent alterations that could affect reporting, accounting, or project management processes.
  
  
  Solution:
  To resolve this error, you have a few options:
  
  
  Check PPN Status: Verify the status of the PPN. If it is indeed closed, you will not be able to change comments directly.
  
  
  Reopen the PPN: If you have the necessary authorizations and it is appropriate to do so, you may consider reopening the PPN. This typically involves:
  
  Navigating to the relevant transaction (e.g., CN22 for changing network status).
  Changing the status from