How To Fix PAK151 - You cannot make package &1 a subpackage of package &2

SAP Error Message - Details

• Message type: E = Error

• Message class: PAK - Package API / Package Tools

• Message number: 151

• Message text: You cannot make package &1 a subpackage of package &2

What causes this issue?

Package &V1& cannot become a subpackage of package &V2& since,
conversely, package &V1& already has package &V2& either directly or
indirectly assigned as superpackage.

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 PAK151 - You cannot make package &1 a subpackage of package &2 ?

  The SAP error message PAK151 indicates that you are trying to make a package a subpackage of another package, but this operation is not allowed due to certain restrictions in the SAP system. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Circular Dependency: The package you are trying to make a subpackage of may already be a subpackage of the package you are trying to create. This creates a circular dependency, which is not allowed.
  Package Hierarchy Restrictions: SAP has specific rules regarding package hierarchies. For example, a package cannot be a subpackage of its own parent or any of its ancestors.
  Transport Layer Issues: If the packages are part of different transport layers or if there are inconsistencies in the transport routes, this can also lead to this error.
  
  Solution:
  
  Check Package Hierarchy: Review the current hierarchy of the packages involved. Ensure that the package you are trying to make a subpackage is not already a subpackage of the target package or any of its ancestors.
  Reorganize Packages: If there is a circular dependency, you may need to reorganize your packages. Consider creating a new package or restructuring the existing ones to avoid the conflict.
  Use Transaction SE80: You can use transaction SE80 (Object Navigator) to visualize the package structure and make necessary adjustments.
  Consult Documentation: Refer to SAP documentation or guidelines on package management to ensure compliance with best practices.
  Check Transport Routes: Ensure that the transport routes are correctly set up and that there are no inconsistencies that could be causing the issue.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Package Management: Familiarize yourself with SAP's package management concepts, including how to create, modify, and manage packages and their hierarchies.
  Transport Management System (TMS): Understanding how the Transport Management System works can help in resolving issues related to package transport and dependencies.
  
  If the issue persists after trying the above solutions, consider reaching out to your SAP Basis team or SAP support for further assistance.