How To Fix M3642 - From lot size may not be greater than "to" lot size

SAP Error Message - Details

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 642

• Message text: From lot size may not be greater than "to" lot size

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message M3642 - From lot size may not be greater than "to" lot size ?

  The SAP error message M3642, which states "From lot size may not be greater than 'to' lot size," typically occurs in the context of material management and production planning. This error is related to the configuration of lot sizes in the material master or in the production order.
  Cause:
  The error arises when the system detects that the defined "from lot size" is greater than the "to lot size" in the material master or in the production order settings. This can happen in various scenarios, such as:
  
  Material Master Settings: The lot size settings in the material master for a specific material are incorrectly configured.
  Production Order: When creating or modifying a production order, the specified lot sizes do not align with the defined ranges in the material master.
  Planning Parameters: The planning parameters for the material may not be set correctly, leading to inconsistencies in lot size definitions.
  
  Solution:
  To resolve the M3642 error, you can take the following steps:
  
  
  Check Material Master Data:
  
  Go to the material master record (transaction code MM03).
  Check the "MRP" (Material Requirements Planning) view for the lot size settings.
  Ensure that the "from lot size" is not greater than the "to lot size." If it is, adjust the values accordingly.
  
  
  
  Review Production Order Settings:
  
  If the error occurs during the creation of a production order, review the lot size settings in the order.
  Ensure that the lot sizes specified in the production order are within the defined ranges in the material master.
  
  
  
  Adjust Planning Parameters:
  
  If applicable, review the planning parameters in the material master and adjust them to ensure consistency with the lot size definitions.
  
  
  
  Consult Documentation:
  
  If you are unsure about the correct settings, refer to SAP documentation or consult with your SAP functional consultant for guidance on proper lot size configuration.
  
  
  
  Testing:
  
  After making the necessary adjustments, test the changes by attempting to create or modify the production order again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Lot Size Types: Understand the different types of lot sizes in SAP, such as fixed lot size, variable lot size, and lot-for-lot.
  Material Requirements Planning (MRP): Familiarize yourself with how MRP works in SAP and how it utilizes lot sizes for planning purposes.
  Transaction Codes: Common transaction codes related to material master and production orders include:
  
  MM01: Create Material
  MM02: Change Material
  MM03: Display Material
  CO01: Create Production Order
  CO02: Change Production Order
  
  
  
  By following these steps and understanding the underlying concepts, you should be able to resolve the M3642 error effectively.