How To Fix SPXN157 - Usage of &1 &2 is not permitted (&3) - check package interface

SAP Error Message - Details

• Message type: E = Error

• Message class: SPXN - Proxy Generation

• Message number: 157

• Message text: Usage of &1 &2 is not permitted (&3) - check package interface

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SPXN157 - Usage of &1 &2 is not permitted (&3) - check package interface ?

  The SAP error message SPXN157 indicates that there is an issue with the usage of a specific object (like a function module, class, or method) in a package that is not permitted due to interface restrictions. This typically occurs when you are trying to use an object that is not allowed in the context of the package you are working with.
  Cause:
  
  Package Interface Restrictions: The object you are trying to use is defined in a package that has specific interface restrictions. This means that certain objects can only be used in certain packages or contexts.
  Transport Layer Issues: If the object is part of a transport request, it may not be properly released or may be in a state that does not allow its usage.
  Development Class Issues: The object might belong to a different development class that does not allow cross-package usage.
  
  Solution:
  
  
  Check Package Interface: Review the package interface settings for the package you are working with. Ensure that the object you are trying to use is included in the allowed interfaces.
  
  Go to transaction SE80 (Object Navigator) and check the package settings.
  Look for the "Interface" tab and see if the object is listed there.
  
  
  
  Adjust Package Settings: If you have the necessary authorizations, you may need to adjust the package settings to allow the usage of the object.
  
  This may involve changing the package interface or moving the object to a different package that allows its usage.
  
  
  
  Consult Documentation: Check the SAP documentation or notes related to the specific object and package to understand any restrictions or guidelines.
  
  
  Contact Basis or Development Team: If you are unsure about making changes, it may be best to consult with your SAP Basis or development team. They can provide insights into the package structure and help resolve the issue.
  
  
  Check Transport Requests: If the object is part of a transport request, ensure that the transport is released and imported correctly into the target system.
  
  
  Related Information:
  
  Transaction Codes: SE80 (Object Navigator), SE11 (Data Dictionary), SE37 (Function Module), SE24 (Class Builder).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional context.
  Development Guidelines: Familiarize yourself with SAP's development guidelines regarding package interfaces and object usage to avoid similar issues in the future.
  
  By following these steps, you should be able to identify the cause of the SPXN157 error and implement a solution to resolve it.