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

SAP Error Message - Details

• 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 that the interface is properly defined and that an access control list is set up.
  
  
  
  Activate Access Control List:
  
  If the ACL is not activated, you will need to create or activate it.
  Use transaction code PFCG (Role Maintenance) to manage roles and authorizations.
  Create or modify a role that includes the necessary authorizations for the package interface.
  
  
  
  Assign Authorizations:
  
  Ensure that the user trying to access the package interface has the appropriate roles assigned that include the necessary authorizations.
  You may need to consult with your SAP security team to ensure that the correct roles are assigned.
  
  
  
  Testing:
  
  After making the necessary changes, test the access to the package interface again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SE80: Object Navigator
  SE11: Data Dictionary
  PFCG: Role Maintenance
  
  
  Authorization Objects: Check the relevant authorization objects that might be associated with the package interface.
  SAP Notes: Look for any relevant SAP Notes that might provide additional insights or solutions related to this error.
  
  If the issue persists after following these steps, it may be beneficial to consult SAP support or your internal SAP Basis team for further assistance.