How To Fix MD451 - The list was created at &1 hours

SAP Error Message - Details

• Message type: E = Error

• Message class: MD - Material Requirements Planning (MRP)

• Message number: 451

• Message text: The list was created at &1 hours

What causes this issue?

The list has not been renewed but has been read from the memory.
The list was set up at &V1& hours and then written to the memory.

How to fix this error?

If you wish to renew the list, choose the 'Refresh' function.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MD451 - The list was created at &1 hours ?

  The SAP error message MD451, which states "The list was created at &1 hours," typically occurs in the context of the Material Requirements Planning (MRP) process. This message is not necessarily an error but rather an informational message indicating that the MRP list was generated at a specific time.
  Cause:
  The message MD451 is usually triggered when:
  
  You are trying to execute a transaction or report that requires the MRP list to be up-to-date, but the list was created at a time that is not current.
  The MRP list may be outdated, and the system is informing you that the data you are working with may not reflect the latest planning results.
  
  Solution:
  To resolve the issue indicated by MD451, you can take the following steps:
  
  
  Refresh the MRP List: 
  
  Run the MRP process again to generate a new MRP list. This can be done through transaction codes like MD01 (MRP Run) or MD02 (Single-item, Multi-level MRP).
  Ensure that the planning parameters are set correctly to reflect the current requirements.
  
  
  
  Check MRP Settings:
  
  Verify the settings in the MRP configuration to ensure that the planning run is scheduled appropriately and that the data is being updated as expected.
  
  
  
  Review MRP Results:
  
  After running the MRP, check the results to ensure that the new list reflects the current inventory levels, demand, and supply.
  
  
  
  Consult Documentation:
  
  If you are unsure about the MRP process or how to refresh the list, refer to SAP documentation or consult with your SAP support team for guidance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MD01, MD02, MD03 (for MRP runs) and MD04 (Stock/Requirements List) to monitor and manage MRP data.
  MRP Configuration: Understanding the configuration settings for MRP in your SAP system can help prevent issues related to outdated lists.
  SAP Notes: Check for any SAP Notes related to MRP and the MD451 message for additional insights or patches that may address specific issues.
  
  If the problem persists after following these steps, it may be beneficial to engage with your SAP support team or consult SAP's support portal for further assistance.