How To Fix M3291 - Fixed lot size reset since unnecessary for this procedure

SAP Error Message - Details

• Message type: E = Error

• Message class: M3 - Material Master

• Message number: 291

• Message text: Fixed lot size reset since unnecessary for this procedure

What causes this issue?

The value entered by you as the fixed lot size has been reset since no
fixed lot size is required for the lot sizing procedure chosen.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M3291 - Fixed lot size reset since unnecessary for this procedure ?

  The SAP error message M3291, which states "Fixed lot size reset since unnecessary for this procedure," typically occurs in the context of production planning and inventory management. This message indicates that the system has determined that the fixed lot size setting is not applicable for the current operation or procedure being executed.
  Cause:
  
  Inappropriate Lot Size Configuration: The fixed lot size may not be suitable for the specific production order or planning run being executed. This can happen if the lot size is set in a way that does not align with the requirements of the production process.
  Production Order Type: The type of production order being processed may not support fixed lot sizes, leading the system to reset this parameter.
  Material Master Settings: The material master data may not be configured correctly, particularly in the MRP (Material Requirements Planning) views, which can lead to inconsistencies in how lot sizes are handled.
  Planning Strategy: The planning strategy assigned to the material may not be compatible with fixed lot sizes, causing the system to ignore this setting.
  
  Solution:
  
  Review Lot Size Settings: Check the lot size settings in the material master record. Ensure that the fixed lot size is appropriate for the production process and aligns with the requirements of the production order.
  Check Production Order Type: Verify that the production order type being used supports fixed lot sizes. If not, consider changing the order type or adjusting the lot size settings.
  Adjust Material Master Data: Review and, if necessary, update the MRP views in the material master to ensure that they are configured correctly for the intended production process.
  Examine Planning Strategy: Check the planning strategy assigned to the material. If it does not support fixed lot sizes, consider changing the strategy or using a different lot size approach that is compatible.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on lot size settings and their implications in your version of SAP.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like MM02 (Change Material), CO01 (Create Production Order), or MD04 (Stock/Requirements List) to review and adjust settings.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context on fixed lot sizes and their configurations.
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed, providing insights or solutions from other users.
  
  If the issue persists after checking these areas, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in production planning and inventory management.