How To Fix CP439 - Incorrect lot size range for alternative sequence

SAP Error Message - Details

• Message type: E = Error

• Message class: CP - Task list messages: Core data

• Message number: 439

• Message text: Incorrect lot size range for alternative sequence

What causes this issue?

A reference operation set is referenced in routing &V1& &V2&, operation
&V4& and sequence &V3&. The lot size range of the alternative sequence
exceeds the lot size range of the referenced operation set.

How to fix this error?

Check the routing and, if necessary, correct the lot size range of the
alternative sequence.
Make sure that the lot size range of the referenced operation set
includes the lot size range of the referenced sequence.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CP439 - Incorrect lot size range for alternative sequence ?

  The SAP error message CP439, which states "Incorrect lot size range for alternative sequence," typically occurs in the context of production planning and control, particularly when dealing with alternative sequences in the production process. This error indicates that there is a mismatch or inconsistency in the lot size range defined for an alternative sequence in the routing or production order.
  Cause:
  
  Lot Size Configuration: The lot size range defined for the alternative sequence does not match the lot size defined in the production order or the master data.
  Routing Issues: The routing for the production order may not have the correct alternative sequences defined, or the sequences may not be properly configured.
  Master Data Inconsistencies: There may be inconsistencies in the material master data, such as the lot size range not being properly set for the material being produced.
  Production Version: The production version may not be correctly set up to include the alternative sequences with the appropriate lot size ranges.
  
  Solution:
  
  
  Check Lot Size Configuration:
  
  Go to the material master (transaction code MM03) and check the lot size range defined for the material.
  Ensure that the lot size range in the production order matches the defined ranges in the material master.
  
  
  
  Review Routing:
  
  Check the routing for the material (transaction code CA03) and ensure that the alternative sequences are correctly defined.
  Verify that the lot size ranges for the alternative sequences are appropriate and consistent with the production order.
  
  
  
  Adjust Production Order:
  
  If the production order is incorrectly set up, you may need to adjust the lot size or the alternative sequence being used.
  You can do this by changing the production order (transaction code CO02) and ensuring that the correct alternative sequence is selected.
  
  
  
  Check Production Version:
  
  Ensure that the production version used in the production order includes the correct routing and alternative sequences.
  You can check this in the material master under the "MRP 2" view.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to production planning and alternative sequences for additional guidance.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  MM03: Display Material Master
  CA03: Display Routing
  CO02: Change Production Order
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  User Exits and BAdIs: If custom logic is involved, check for any user exits or BAdIs that may affect the lot size or routing logic.
  
  If the issue persists after checking the above points, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in production planning.