How To Fix M3670 - Lot sizing procedure requires a rounding value

SAP Error Message - Details

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 670

• Message text: Lot sizing procedure requires a rounding value

What causes this issue?

A rounding value is required for the lot size procedure you have chosen.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Enter a rounding value.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M3670 - Lot sizing procedure requires a rounding value ?

  The SAP error message M3670, which states "Lot sizing procedure requires a rounding value," typically occurs in the context of material requirements planning (MRP) and inventory management. This error indicates that the lot sizing procedure defined for a material requires a rounding value to be specified, but it has not been provided.
  Cause:
  
  Lot Sizing Procedure: The lot sizing procedure defined for the material in the material master may require a rounding value. This is common in procedures like "Lot-for-lot" or "Fixed lot size" where the system needs to round the calculated order quantity to a specific increment.
  Material Master Settings: The material master record may not have the rounding value set up correctly, or it may be missing entirely.
  Configuration Issues: The configuration settings in the SAP system for the lot sizing procedure may not be complete or correctly defined.
  
  Solution:
  
  
  Check Material Master:
  
  Go to the material master record (transaction code MM02).
  Navigate to the MRP view and check the lot sizing procedure.
  Ensure that a rounding value is specified in the relevant field.
  
  
  
  Define Rounding Value:
  
  If the rounding value is missing, you can define it in the material master. This is usually done in the "Lot Size" section of the MRP view.
  Specify the appropriate rounding value that aligns with your business requirements.
  
  
  
  Review Lot Sizing Procedure:
  
  Check the configuration of the lot sizing procedure in the customizing settings (transaction code SPRO).
  Navigate to Production ? Material Requirements Planning ? Lot Size and review the settings for the lot sizing procedure you are using.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to lot sizing procedures to understand the requirements for rounding values.
  
  
  
  Testing:
  
  After making the necessary changes, run the MRP process again to see if the error persists.
  
  
  
  Related Information:
  
  Lot Sizing Procedures: Different lot sizing procedures (like Lot-for-lot, Fixed lot size, etc.) have specific requirements for rounding values. Understanding these can help in configuring them correctly.
  MRP Configuration: Familiarity with MRP configuration in SAP can help in troubleshooting similar issues in the future.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  
  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 MRP and inventory management.