How To Fix PAK126 - No access control list activated for package interface &1

PAK126 - Overview

• Message type: E = Error

• Message class: PAK - Package API / Package Tools

• Message number: 126

• Message text: No access control list activated for package interface &1

What causes this issue?

You can restrict the release of a package interface by explicitly
specifying the client packages. However, you have not activated this
restriction for this package interface &V1&.

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?

Now, you must activate the property "Restriction of Client Packages" for
the package interface &V1&. You can then define the list of permitted
client packages.

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 PAK126 - No access control list activated for package interface &1 ?

  The SAP error message PAK126 indicates that there is no access control list (ACL) activated for the specified package interface. This error typically arises when you are trying to access or use a package interface that requires specific authorization settings, but those settings have not been configured.
  
  Cause:
  
  Missing ACL Configuration: The primary cause of this error is that the access control list for the package interface has not been defined or activated in the system.
  Authorization Issues: The user may not have the necessary authorizations to access the package interface, which can also lead to this error.
  Package Interface Not Properly Defined: The package interface may not be correctly set up in the system, leading to the absence of an ACL.
  
  
  Solution:
  To resolve the PAK126 error, you can follow these steps:
  
  
  Check Package Interface Configuration:
  
  Go to the transaction code SE80 (Object Navigator) or SE11 (Data Dictionary).
  Navigate to the package interface that is causing the error.
  Ensure