How To Fix OO415 - For Class-/Interface-Enhancements only one level of nesting allowed!

SAP Error Message - Details

• Message type: E = Error

• Message class: OO - Class Builder/API

• Message number: 415

• Message text: For Class-/Interface-Enhancements only one level of nesting allowed!

What causes this issue?

The nesting level of your enhancement implementation is deeper than the
maximum currently allowed.
Only for source code plug-ins we're supporting a deep nesting level.

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?

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 OO415 - For Class-/Interface-Enhancements only one level of nesting allowed! ?

  The SAP error message OO415 ("For Class-/Interface-Enhancements only one level of nesting allowed!") typically occurs when you are trying to create nested enhancements for classes or interfaces in ABAP. In ABAP, enhancements allow you to add custom functionality to existing classes or interfaces without modifying the original code. However, SAP restricts the nesting of these enhancements to one level to maintain clarity and avoid complexity in the code structure.
  
  Cause:
  The error is triggered when you attempt to create an enhancement for a class or interface that is already an enhancement itself. This means you are trying to nest enhancements, which is not allowed in the ABAP enhancement framework.
  
  Solution:
  To resolve this error, you should:
  
  
  Check the Enhancement Structure: Review the enhancements you have created. Ensure that you are not trying to create a new enhancement for an existing enhancement. You can only enhance the original class or interface directly.
  
  
  Use the Correct Enhancement: If