How To Fix MD401 - &1: &2 (A1)

MD401 - Overview

• Message type: E = Error

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

• Message number: 401

• Message text: &1: &2 (A1)

What causes this issue?

Available plant stock is less than the safety stock recorded in the
material master record.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MD401 - &1: &2 (A1) ?

  The SAP error message MD401 typically indicates an issue related to the availability of materials in the context of Material Requirements Planning (MRP). The message format usually looks like this:
  MD401 &1: &2 (A1)
  Where &1 and &2 are placeholders for specific details about the error, such as the material number and the plant.
  
  Cause:
  The MD401 error generally occurs due to one of the following reasons:
  
  Insufficient Stock: The system cannot find enough stock of the material to meet the demand.
  Incorrect MRP Settings: The MRP settings for the material may not be configured correctly, leading to issues in planning.
  Planning File Entries: There may be issues with the planning file entries that prevent the system from processing the material correctly.
  Lead Time Issues: The lead times for procurement or production may not be set correctly, causing the system to determine that the material is not available when it actually is.
  Blockages: The material may be blocked for