How To Fix MW491 - No stock comparison check defined for check schema & of alloc. type &

SAP Error Message - Details

• Message type: E = Error

• Message class: MW - Messages IS-R / Allocation Tables

• Message number: 491

• Message text: No stock comparison check defined for check schema & of alloc. type &

What causes this issue?

Allocation table type &V2& has been used in the allocation table. A
check schema (&V1&) has been defined for this type that does not
compare stock levels.

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?

Check in the <DS:SIMG.W_ZF_VK_0410.SIMG_OAUF>Allocation table type</>
that the check schema is set properly.
INCLUDE ISR_CUSTOMIZING

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MW491 - No stock comparison check defined for check schema & of alloc. type & ?

  The SAP error message MW491 indicates that there is no stock comparison check defined for the specified check schema and allocation type. This error typically arises in the context of inventory management or stock allocation processes, particularly when the system is trying to perform a stock comparison check but cannot find the necessary configuration.
  Cause:
  
  Missing Configuration: The check schema for stock comparison has not been defined in the system for the specified allocation type.
  Incorrect Allocation Type: The allocation type being used may not have a corresponding check schema defined.
  Custom Development: If there are custom developments or modifications in the system, they may not have been properly configured to handle stock comparison checks.
  
  Solution:
  
  
  Define Check Schema:
  
  Go to the configuration settings in SAP (usually through SPRO).
  Navigate to the relevant area for inventory management or stock allocation.
  Define the check schema for the allocation type that is causing the error. This typically involves specifying the criteria for stock comparison checks.
  
  
  
  Check Allocation Type:
  
  Verify that the allocation type being used is correct and corresponds to a defined check schema.
  If necessary, adjust the allocation type or create a new one that has the appropriate check schema.
  
  
  
  Review Customizations:
  
  If there are custom developments, review the code to ensure that it correctly references the check schema and allocation type.
  Consult with your ABAP developer or SAP consultant if needed.
  
  
  
  Testing:
  
  After making the necessary changes, perform tests to ensure that the stock comparison check works as expected without triggering the error.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SPRO (for configuration), or other relevant transaction codes for inventory management.
  Documentation: Refer to SAP documentation or help guides related to inventory management and stock allocation for detailed steps on defining check schemas.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to this error message.
  
  If the issue persists after following these steps, it may be beneficial to consult with SAP support or a qualified SAP consultant for further assistance.