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

CACSCUST401 - Overview

• 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