How To Fix FL810 - Testing of typed interfaces is not supported at present

FL810 - Overview

• Message type: E = Error

• Message class: FL - Function Builder messages

• Message number: 810

• Message text: Testing of typed interfaces is not supported at present

What causes this issue?

You attempted to test a function module with an interface containing a
parameter with a reference type. This is not currently supported.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FL810 - Testing of typed interfaces is not supported at present ?

  The SAP error message FL810, which states "Testing of typed interfaces is not supported at present," typically occurs when you are trying to test a function module or method that uses typed interfaces in the ABAP Workbench or during unit testing. This limitation is due to the fact that the testing framework in SAP does not currently support typed interfaces.
  
  Cause:
  
  Typed Interfaces: The error arises when you attempt to test a function module or method that has a typed interface. Typed interfaces are defined using the INTERFACE keyword and are more structured than traditional parameter passing.
  Testing Framework Limitation: The SAP testing framework (such as ABAP Unit) does not support the direct testing of methods or function modules that utilize these typed interfaces.
  
  
  Solution:
  
  Use Un-typed Interfaces: If possible, modify the function module or method to use un-typed interfaces (i.e., using standard parameters instead of typed interfaces). This allows you to test the functionality