How To Fix CM123 - Multiple allocation not allowed (check selected allocations).

SAP Error Message - Details

• Message type: E = Error

• Message class: CM - Task list messages: Material component allocations

• Message number: 123

• Message text: Multiple allocation not allowed (check selected allocations).

What causes this issue?

During the consistency check, multiple allocations were found.
Multiple allocation is not allowed. It can occur due
to referenced operations or as a result of changes with a future key
date.

How to fix this error?

Change the allocations so as to achieve consistency.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM123 - Multiple allocation not allowed (check selected allocations). ?

  The SAP error message CM123 "Multiple allocation not allowed (check selected allocations)" typically occurs in the context of the SAP Controlling (CO) module, particularly when dealing with cost allocations or internal orders. This error indicates that the system has detected an attempt to perform a multiple allocation where it is not permitted.
  Cause:
  
  Incorrect Allocation Method: The allocation method you are trying to use may not support multiple allocations. For example, certain allocation types may only allow single allocations.
  Selection Criteria: The selection criteria for the allocations may have included multiple entries that are not compatible with the allocation method being used.
  Configuration Issues: There may be configuration settings in the controlling area or allocation structure that restrict multiple allocations.
  Data Entry Errors: There could be errors in the data entry, such as selecting multiple cost centers or internal orders that should not be allocated together.
  
  Solution:
  
  Review Allocation Method: Check the allocation method you are using and ensure it supports multiple allocations. If it does not, consider using a different method that allows for multiple allocations.
  Check Selected Allocations: Review the allocations you have selected for processing. Ensure that you are not trying to allocate multiple entries that are not allowed together.
  Adjust Selection Criteria: Modify your selection criteria to ensure that only compatible allocations are included. This may involve selecting a single cost center or internal order instead of multiple ones.
  Configuration Review: Consult with your SAP configuration team to review the settings related to allocations in the controlling area. Ensure that the configuration allows for the type of allocation you are attempting.
  Consult Documentation: Refer to SAP documentation or help resources for specific details on the allocation methods and their restrictions.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to cost allocations, such as KSU5 (Actual Distribution), KSV5 (Actual Assessment), or KSV1 (Plan Assessment).
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on allocation methods.
  User Roles and Authorizations: Ensure that the user has the necessary roles and authorizations to perform the allocation tasks.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the Controlling module for further assistance.