How To Fix MD423 - &1: &2 (U5)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 423

• Message text: &1: &2 (U5)

What causes this issue?

The planned available stock is greater than the maximum stock as
specified by the range of coverage profile.

System Response

This exception is displayed in the MRP list if a dynamic safety stock
is calculated using a range of coverage profile.

How to fix this error?

Check whether this additional stock is necessary.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MD423 - &1: &2 (U5) ?

  The SAP error message MD423 typically indicates an issue related to the availability of materials in the context of production planning and control. The message format you provided suggests that it is a warning or error related to the availability check for a specific material or component in a production order or planning scenario.
  Cause:
  The error message MD423 usually arises due to one of the following reasons:
  
  Insufficient Stock: The system cannot find enough stock of the required material to fulfill the demand.
  Incorrect Planning Parameters: The planning parameters for the material may not be set correctly, leading to incorrect availability checks.
  Lead Time Issues: The lead times for procurement or production may not be sufficient to meet the demand.
  Incorrect Master Data: Issues with the material master data, such as incorrect MRP type, lot size, or safety stock settings.
  Open Purchase Orders or Production Orders: There may be open orders that are consuming the available stock.
  
  Solution:
  To resolve the MD423 error, you can take the following steps:
  
  Check Stock Levels: Verify the current stock levels of the material in question using transaction codes like MMBE (Stock Overview) or MB52 (List of Warehouse Stocks on Hand).
  Review MRP Settings: Check the material master data for the relevant MRP settings. Ensure that the MRP type, lot size, and safety stock levels are correctly configured.
  Analyze Demand and Supply: Use transaction MD04 (Stock/Requirements List) to analyze the demand and supply situation for the material. Look for any open purchase orders or production orders that may be affecting availability.
  Adjust Lead Times: If lead times are too long, consider adjusting them in the material master or reviewing the procurement process.
  Run MRP: If changes are made to the master data or stock levels, run the MRP process again to update the availability situation.
  Consult Documentation: Refer to SAP documentation or help resources for specific details related to the error message and its implications.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MD04, MMBE, MD01, and MD02 for MRP processing.
  SAP Notes: Check SAP Notes for any known issues or patches related to the MD423 error.
  User Roles: Ensure that you have the necessary authorizations to view and modify material master data and MRP settings.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in production planning and control.