How To Fix CMS_AST311 - Partner with ID &1 and function &2 is already assigned to the sub-asset

SAP Error Message - Details

• Message type: E = Error

• Message class: CMS_AST - Message Class for Asset

• Message number: 311

• Message text: Partner with ID &1 and function &2 is already assigned to the sub-asset

What causes this issue?

You cannot assign a business partner with the same identification number
and partner function, to the sub-asset, more than once.

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?

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 CMS_AST311 - Partner with ID &1 and function &2 is already assigned to the sub-asset ?

  The SAP error message CMS_AST311 indicates that there is an attempt to assign a partner (such as a vendor, customer, or other business partner) to a sub-asset that is already assigned to that partner for the specified function. This typically occurs in the context of Asset Accounting or Contract Management within SAP.
  Cause:
  The error is triggered when:
  
  You are trying to assign a partner to a sub-asset that already has that partner assigned for the same function.
  There may be a misunderstanding of the business rules regarding partner assignments in the system.
  The system is enforcing a unique assignment rule for partners to sub-assets for specific functions.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Assignments:
  
  Review the current assignments for the sub-asset in question. You can do this by navigating to the asset master data and checking the partner assignments.
  Identify if the partner is already assigned for the function you are trying to use.
  
  
  
  Modify or Remove Existing Assignment:
  
  If the partner is already assigned and you need to change it, you may need to remove the existing assignment before adding a new one.
  Alternatively, if the assignment is correct and you need to add a different partner, ensure that the new partner is not already assigned for the same function.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation or configuration settings related to partner assignments for sub-assets to understand the rules and constraints.
  
  
  
  Check for Customizations:
  
  If your organization has custom developments or enhancements in place, check with your SAP technical team to see if there are any specific rules or logic that might be causing this error.
  
  
  
  Contact Support:
  
  If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like AS01 (Create Asset), AS02 (Change Asset), or AS03 (Display Asset) to manage asset data.
  Documentation: Refer to SAP Help Portal for detailed information on Asset Accounting and partner assignments.
  Configuration: Review the configuration settings in SPRO related to Asset Accounting and partner management to ensure they align with your business processes.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.