How To Fix CK726 - Qty structure type was changed between selection/explosion and costing

SAP Error Message - Details

• Message type: E = Error

• Message class: CK - Product Costing Messages

• Message number: 726

• Message text: Qty structure type was changed between selection/explosion and costing

What causes this issue?

Between selection/structure explosion of a costing run and costing, or
between two costing phases, the Customizing settings for a
<DS:GLOS.mixed_costing>mixed cost estimate</> were changed.
The selection process uses quantity structure category &V1&, while the
structure explosion uses quantity structure category &V2&.

System Response

The structure cannot be exploded.

How to fix this error?

Change the settings for mixed costing in Customizing or start selection
again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CK726 - Qty structure type was changed between selection/explosion and costing ?

  The SAP error message CK726 indicates that there is a discrepancy in the quantity structure type between the selection/explosion phase and the costing phase during the costing process. This typically occurs in the context of product costing, where the system expects a consistent quantity structure throughout the costing run.
  Cause:
  
  Changes in Master Data: The quantity structure type may have been changed in the material master or BOM (Bill of Materials) after the initial selection/explosion but before the costing run was completed.
  Configuration Changes: Changes in configuration settings related to costing or BOMs can lead to this error.
  Multiple Users: If multiple users are working on the same material or BOM, one user may change the quantity structure while another is processing costing.
  Versioning Issues: If different versions of BOMs or routing are being used, it can lead to inconsistencies.
  
  Solution:
  
  Check Master Data: Review the material master, BOM, and routing to ensure that the quantity structure type is consistent and has not been changed during the costing process.
  Re-run Costing: If changes were made, you may need to re-run the costing process after ensuring that all relevant data is consistent.
  Locking Mechanism: Implement a locking mechanism to prevent changes to the BOM or material master while costing is being processed.
  Review Change Logs: Check the change logs for the material and BOM to identify any changes made during the costing process.
  Consistency Check: Use transaction CK11N (Create Cost Estimate with Quantity Structure) to check for inconsistencies in the quantity structure before proceeding with costing.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CK11N (Create Cost Estimate), CK40N (Change Cost Estimate), and CS01/CS02 (Create/Change BOM) to manage and review costing and BOM data.
  SAP Notes: Check for any SAP Notes related to this error message for specific patches or updates that may address known issues.
  Documentation: Review SAP documentation on product costing and BOM management for best practices and guidelines to avoid such errors in the future.
  
  By addressing the underlying causes and ensuring consistency in the data, you can resolve the CK726 error and successfully complete the costing process.