How To Fix CNV_PE521 - Scenario-dependent Customizing is already present for &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 521

• Message text: Scenario-dependent Customizing is already present for &1

What causes this issue?

Structural parameter &V1& cannot be linked to any other parameter
because knowledge base already contains scenario-dependent Customizing
(at least on the structural level) for it.

System Response

Own scenario-dependent knowledge base Customizing is not allowed for
linked parameters. The Customizing of the assigned data parameters is
applied to them.

How to fix this error?

Delete scenario-dependent Customizing for parameter &V1&

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE521 - Scenario-dependent Customizing is already present for &1 ?

  The SAP error message CNV_PE521 indicates that there is already existing scenario-dependent customizing for the specified object (denoted by &1). This typically occurs during data migration or system conversion processes, particularly when using SAP's Conversion Tools or Migration Cockpit.
  Cause:
  The error arises when you attempt to create or modify customizing settings for a scenario that already has existing configurations. This can happen in various contexts, such as:
  
  When you are trying to import or apply a new customizing setting that conflicts with an existing one.
  When there are multiple migration scenarios or projects that have overlapping configurations.
  
  Solution:
  To resolve the CNV_PE521 error, you can follow these steps:
  
  
  Check Existing Customizing:
  
  Review the existing customizing settings for the specified object. You can do this by navigating to the relevant customizing transaction or using transaction codes like SPRO.
  Identify the conflicting settings that are causing the error.
  
  
  
  Modify or Delete Conflicting Settings:
  
  If the existing customizing is no longer needed, consider deleting or modifying it to allow for the new settings you are trying to apply.
  If the existing settings are required, you may need to adjust your new customizing to avoid conflicts.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation or notes related to the specific migration scenario you are working on. There may be specific guidelines or prerequisites that need to be followed.
  
  
  
  Use Transaction CNV_MBT:
  
  If you are using the SAP S/4HANA Migration Cockpit, you can use transaction CNV_MBT to manage your migration projects and check for existing customizing settings.
  
  
  
  Seek Help from SAP Support:
  
  If you are unable to resolve the issue, consider reaching out to SAP Support for assistance. Provide them with the details of the error and the context in which it occurred.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SPRO (Customizing), CNV_MBT (Migration Project Management), and others that may be pertinent to your scenario.
  SAP Notes: Check for any SAP Notes that may address this specific error or provide additional context on handling scenario-dependent customizing.
  Migration Tools: Understand the tools and methodologies used for data migration in SAP, especially if you are working with S/4HANA or other conversion projects.
  
  By following these steps, you should be able to identify the cause of the CNV_PE521 error and implement a suitable solution.