How To Fix OIUX3401 - Legacy PUN must not be entered after NM Rewrite Go-Live Date

OIUX3401 - Overview

• Message type: E = Error

• Message class: OIUX3 - Tax Reporting

• Message number: 401

• Message text: Legacy PUN must not be entered after NM Rewrite Go-Live Date

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 OIUX3401 - Legacy PUN must not be entered after NM Rewrite Go-Live Date ?

  The SAP error message OIUX3401, which states "Legacy PUN must not be entered after NM Rewrite Go-Live Date," typically occurs in the context of the SAP system when dealing with the New Market (NM) Rewrite project. This project often involves changes to how certain data is managed, particularly in relation to Product Usage Numbers (PUNs) and their legacy systems.
  
  Cause:
  The error is triggered when a user attempts to enter or process a Legacy Product Usage Number (PUN) after the designated "Go-Live" date for the NM Rewrite project. The system is designed to prevent the use of legacy data to ensure that all transactions and data entries are aligned with the new system's requirements and standards.
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Verify the Go-Live Date: Check the official Go-Live date for the NM Rewrite project. Ensure that you are aware of the timeline and that you are not attempting to enter