How To Fix PAK128 - Development element cannot be added to package interface

PAK128 - Overview

• Message type: E = Error

• Message class: PAK - Package API / Package Tools

• Message number: 128

• Message text: Development element cannot be added to package interface

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message PAK128 - Development element cannot be added to package interface ?

  The SAP error message PAK128, which states "Development element cannot be added to package interface," typically occurs when there is an attempt to add a development object (like a function module, class, or method) to a package interface that is not allowed due to certain restrictions or conditions.
  Causes:
  
  
  Incorrect Package Type: The package you are trying to add the development element to may not be a proper package interface. Package interfaces are special types of packages that are used to define the interface of a package.
  
  
  Development Class Restrictions: The development class (package) may have restrictions on what types of objects can be added to its interface. For example, certain types of objects may not be allowed in a package interface.
  
  
  Transport Layer Issues: If the package is part of a transport layer that has specific rules or restrictions, this could prevent the addition of certain elements.
  
  
  Missing Authorization: The user may not have