How To Fix OO138 - You cannot work directly with the proxies of remotely-callable interfaces

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 138

• Message text: You cannot work directly with the proxies of remotely-callable interfaces

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OO138 - You cannot work directly with the proxies of remotely-callable interfaces ?

  The SAP error message OO138, which states "You cannot work directly with the proxies of remotely-callable interfaces," typically occurs in the context of ABAP programming when dealing with Remote Function Calls (RFC) or Web Services. This error indicates that you are trying to use a proxy class directly, which is not allowed.
  Cause:
  The error arises when you attempt to instantiate or directly manipulate a proxy class that is generated for a remotely callable interface (like a Web Service or RFC). In SAP, proxy classes are meant to be used in a specific way, and direct manipulation is not permitted.
  Solution:
  To resolve this error, you should follow these steps:
  
  
  Use the Correct Method: Instead of trying to instantiate the proxy class directly, you should use the appropriate methods provided by the proxy. This usually involves calling a method that handles the communication with the remote service.
  
  
  Check the Proxy Generation: Ensure that the proxy class has been generated correctly. You can regenerate the proxy using transaction SPROXY if necessary.
  
  
  Use the Proxy in the Right Context: Make sure you are using the proxy in the context of a function module or a method that is designed to handle remote calls. For example, if you are working with a Web Service, ensure you are using the generated methods to call the service.
  
  
  Refer to Documentation: Check the SAP documentation for the specific proxy you are working with. There may be specific guidelines or examples on how to use the proxy correctly.
  
  
  Debugging: If you are still facing issues, consider debugging your code to see where the error is being triggered. This can help you identify if you are trying to use the proxy incorrectly.
  
  
  Related Information:
  
  Proxy Classes: In SAP, proxy classes are generated for remote interfaces to facilitate communication between systems. They encapsulate the details of the communication and provide a simplified interface for developers.
  Remote Function Calls (RFC): RFC is a protocol used in SAP for communication between different SAP systems or between SAP and non-SAP systems.
  Web Services: SAP supports various web service standards, and proxies are often used to interact with these services.
  
  If you continue to experience issues, consider reaching out to your SAP support team or consulting the SAP Community for further assistance.