How To Fix OO390 - Methods for CDS table functions cannot be tested and were removed

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 390

• Message text: Methods for CDS table functions cannot be tested and were removed

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

Methods were removed from the node containing testable methods.

How to fix this error?

Methods for CDS table functions can be tested by using Data Preview in
ABAP development tools for the corresponding CDS view.

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 OO390 - Methods for CDS table functions cannot be tested and were removed ?

  The SAP error message OO390 indicates that methods for Core Data Services (CDS) table functions cannot be tested and have been removed. This error typically arises when you attempt to test a CDS table function in the ABAP Development Tools (ADT) or in the ABAP Workbench, but the system does not support testing for certain types of CDS table functions.
  Cause:
  
  CDS Table Function Limitations: CDS table functions are designed to return a table-like structure and may include complex logic that cannot be executed in a testing environment. The error suggests that the specific CDS table function you are trying to test has characteristics that prevent it from being executed in the test environment.
  Incompatibility with Testing Framework: The testing framework in SAP may not support the execution of certain methods or functions defined in CDS views or table functions, especially if they involve parameters or complex logic.
  
  Solution:
  
  Check the CDS Table Function Definition: Review the definition of the CDS table function to ensure it adheres to the guidelines for testable functions. Simplify the function if possible, or remove any complex logic that may be causing the issue.
  Use Alternative Testing Methods: Instead of testing the CDS table function directly, consider using alternative methods:
  
  ABAP Report: Create an ABAP report that calls the CDS table function and displays the results. This allows you to test the function indirectly.
  SQL Console: Use the SQL console in the SAP HANA database to execute the CDS table function and verify its output.
  
  
  Check for Updates: Ensure that your SAP system is up to date. Sometimes, newer versions of SAP may provide enhancements or fixes related to CDS functionalities.
  Consult Documentation: Refer to the official SAP documentation for CDS and ABAP to understand the limitations and best practices for testing CDS table functions.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on testing CDS table functions.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  ABAP Development Tools (ADT): Familiarize yourself with the capabilities and limitations of ADT when working with CDS views and functions.
  
  By following these steps, you should be able to address the OO390 error and find a suitable way to test your CDS table functions.