How To Fix CACSCUST401 - Target package &1 is already defined as an application

SAP Error Message - Details

• Message type: E = Error

• Message class: CACSCUST - Messages from Copy and Transport Area of Customizing

• Message number: 401

• Message text: Target package &1 is already defined as an application

What causes this issue?

If you use the name of an existing application as the name for the
target package, any Customizing that has been created for this
application may be lost.
The reason for this is that all entries in the Customizing package are
created again. This prevents master data and transaction data accessing
the data on account of the new technical validity.

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?

Choose another package name.

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 CACSCUST401 - Target package &1 is already defined as an application ?

  The SAP error message CACSCUST401 indicates that the target package you are trying to define is already associated with an application. This typically occurs when you attempt to create or modify a package in the SAP system that has already been defined for a specific application or component.
  Cause:
  
  Duplicate Package Definition: The package you are trying to create or modify already exists in the system with the same name and is linked to an application.
  Incorrect Package Assignment: You may be trying to assign a package to an application that is already assigned to another application.
  Configuration Error: There might be a misconfiguration in the system where the package is not being recognized correctly.
  
  Solution:
  
  
  Check Existing Packages: 
  
  Use transaction code SE80 (Object Navigator) or SE11 (Data Dictionary) to check if the package already exists.
  Look for the package name in the system to confirm its current status and associations.
  
  
  
  Modify Existing Package:
  
  If the package already exists and is associated with an application, consider modifying the existing package instead of creating a new one.
  You can change the attributes or the application assignment of the existing package if necessary.
  
  
  
  Use a Different Package Name:
  
  If you need to create a new package, consider using a different name that does not conflict with existing packages.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help resources for guidance on package management and application assignments.
  
  
  
  Check Authorization:
  
  Ensure that you have the necessary authorizations to create or modify packages in the SAP system.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot resolve it, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: SE80 (Object Navigator), SE11 (Data Dictionary), SE37 (Function Module), SE24 (Class Builder).
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Documentation: Review the SAP Help Portal for information on package management and application assignments.
  
  By following these steps, you should be able to resolve the error message CACSCUST401 and successfully manage your packages in the SAP system.