How To Fix MD406 - &1: &2 (N4)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 406

• Message text: &1: &2 (N4)

What causes this issue?

In the MRP list, this exception message displays,
that the order proposal was newly created in the last planning run
that the finish date of the order proposal lies in the past
This situation may occur if automatic forward scheduling in the
planning run has been switched off in Customizing for the plant in
question.

How to fix this error?

Check whether the order proposal should have been rescheduled.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MD406 - &1: &2 (N4) ?

  The SAP error message MD406 typically indicates an issue related to the planning of materials in the system, specifically in the context of Material Requirements Planning (MRP). The message format usually includes placeholders for specific details, which can help identify the exact nature of the problem.
  Cause:
  The error message MD406 generally arises due to one of the following reasons:
  
  Missing Master Data: The material master data for the item in question may be incomplete or missing. This can include missing MRP data, such as planning strategy, lot size, or procurement type.
  Incorrect MRP Settings: The settings for MRP might not be configured correctly for the material or plant.
  Stock Levels: There may be insufficient stock or incorrect stock levels that do not meet the requirements for the planned order.
  Planning Parameters: The planning parameters set for the material may not align with the requirements, leading to discrepancies.
  
  Solution:
  To resolve the MD406 error, you can take the following steps:
  
  Check Material Master Data: Ensure that the material master data is complete and correctly configured. Pay special attention to the MRP views and ensure that all necessary fields are filled out.
  Review MRP Settings: Verify the MRP settings for the material and plant. Check the planning strategy, lot size, and procurement type to ensure they are appropriate for the material.
  Analyze Stock Levels: Check the stock levels for the material in question. Ensure that there is enough stock available to meet the planned requirements.
  Run MRP Again: After making any necessary changes, run the MRP process again to see if the error persists.
  Consult Documentation: Refer to SAP documentation or help resources for specific details related to the error message and its context.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like MD04 (Stock/Requirements List) to analyze the stock and requirements for the material.
  MRP Configuration: Familiarize yourself with MRP configuration settings in the SAP system, which can be accessed through transaction code SPRO.
  SAP Notes: Check for any relevant SAP Notes that may address known issues related to this error message.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or refer to SAP community forums for additional insights.