How To Fix M3287 - Lot size (materials planning) & is not defined

M3287 - Overview

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 287

• Message text: Lot size (materials planning) & is not defined

INCLUDE NA_WERT

Error message extract from SAP system. Copyright SAP SE.

M3287 - Details

• The SAP error message M3287 indicates that the lot size for materials planning is not defined for a specific material. This error typically arises during the planning process when the system attempts to calculate the lot size for production or procurement but finds that the necessary configuration is missing.
  
  Cause:
  
  Missing Lot Size Configuration: The lot size for the material has not been defined in the material master record.
  Incorrect Material Type: The material type may not support lot size configuration.
  Planning Parameters Not Set: The planning parameters for the material may not be properly set up in the material master.
  Missing MRP Data: The MRP (Material Requirements Planning) data for the material may be incomplete or not maintained.
  
  
  Solution:
  To resolve the M3287 error, follow these steps:
  
  
  Check Material Master Record:
  
  Go to transaction code MM02 (Change Material) or MM03 (Display Material).
  Enter the material number and select the appropriate views (usually MRP view).
  Ensure that the lot size is