How To Fix PK141 - No fixed lot size in mat. master record or differs from kanban quantity

SAP Error Message - Details

• Message type: E = Error

• Message class: PK - Production - KANBAN

• Message number: 141

• Message text: No fixed lot size in mat. master record or differs from kanban quantity

What causes this issue?

You have specified in Customizing for the replenishment strategies for
in-house production that no new planned order is to be created when a
kanban container is set to "Empty". Instead, a planned order generated
via the MRP run is to be used.
However, this is possible only if the kanban quantity and the fixed lot
size in the material master record are the same.
Either you have not specified a fixed lot size in the material master
record (MRP 1 view) or the lot size differs from the kanban quantity.
In this case, the planned orders of MRP cannot be used for Kanban.

System Response

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

How to fix this error?

Use the same lot size for the kanban quantity and for the material.
Change the kanban quantity in the control cycle or adjust the fixed lot
size in the material master record to the kanban quantity.
Also check whether the use of planned orders from the MRP run makes
sense for empty kanban containers.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PK141 - No fixed lot size in mat. master record or differs from kanban quantity ?

  The SAP error message PK141 indicates that there is an issue with the lot size configuration in the material master record for a specific material when working with Kanban. This error typically arises in the context of Kanban processing, where the system expects a fixed lot size that matches the Kanban quantity defined for the material.
  Cause:
  
  No Fixed Lot Size Defined: The material master record does not have a fixed lot size defined in the relevant views (usually the MRP or Purchasing views).
  Mismatch in Lot Size and Kanban Quantity: The fixed lot size defined in the material master does not match the Kanban quantity that has been set up for the Kanban control cycle.
  Configuration Issues: There may be issues with the configuration of the Kanban settings in the system, leading to discrepancies between the expected and actual values.
  
  Solution:
  
  
  Check Material Master Record:
  
  Go to the material master record (transaction code MM02).
  Check the MRP view and ensure that a fixed lot size is defined. If not, you may need to set a fixed lot size that matches the Kanban quantity.
  Ensure that the lot size type is appropriate for your Kanban process (e.g., "Fixed Lot Size").
  
  
  
  Verify Kanban Configuration:
  
  Check the Kanban control cycle settings (transaction code PK01 or PK02).
  Ensure that the Kanban quantity is correctly defined and matches the fixed lot size in the material master.
  
  
  
  Adjust Kanban Quantity:
  
  If the fixed lot size cannot be changed, consider adjusting the Kanban quantity to match the fixed lot size defined in the material master.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for further guidance on configuring lot sizes and Kanban settings.
  
  
  
  Testing:
  
  After making the necessary changes, test the Kanban process again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Lot Size Types: Familiarize yourself with different lot size types in SAP, such as "Fixed Lot Size," "Lot-for-Lot," and "Monthly Lot Size," to understand how they impact production and procurement processes.
  Kanban Process: Understand the Kanban process in SAP, including how Kanban control cycles are set up and managed.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues or provide additional guidance related to this error message.
  
  By following these steps, you should be able to resolve the PK141 error and ensure that your Kanban process functions smoothly.