How To Fix EC433 - Program &1 has type &2 (unable to create an interface)

SAP Error Message - Details

• Message type: E = Error

• Message class: EC - Development environment: Menu Painter

• Message number: 433

• Message text: Program &1 has type &2 (unable to create an interface)

What causes this issue?

Creating a user interface is necessary only for reports, module pools
and function modules. It is not possible for includes and subroutine
pools.

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?

Check the program type (in the program attributes). It must be set to
'1' (report), 'M' (module pool) or 'F' (function module).
For includes, you must create the interface to the main program. With
subroutine pools, the interface belongs to the calling program.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EC433 - Program &1 has type &2 (unable to create an interface) ?

  The SAP error message EC433 indicates that there is an issue with the program or object you are trying to create or modify, specifically that it has a type that is not compatible with the creation of an interface. This error typically arises in the context of ABAP development when you are attempting to define an interface for a program or class that does not meet the necessary criteria.
  Cause:
  
  Incorrect Object Type: The program or object you are trying to create an interface for is not of a type that can have an interface. For example, you cannot create an interface for a report program or a function module.
  Naming Conflicts: There may be naming conflicts or issues with the naming conventions used in your program or class.
  Syntax Errors: There could be syntax errors or other issues in the code that prevent the interface from being created.
  Incompatible Attributes: The attributes of the program or class may not be compatible with the requirements for an interface.
  
  Solution:
  
  Check Object Type: Ensure that you are trying to create an interface for a valid object type. Interfaces can only be created for classes, not for programs or function modules.
  Review Naming Conventions: Make sure that the names used in your program or class adhere to SAP naming conventions and do not conflict with existing objects.
  Correct Syntax Errors: Review your code for any syntax errors or issues that may be causing the problem. Use the ABAP editor's syntax check feature to identify and correct errors.
  Use a Class Instead: If you are trying to create an interface for a report program, consider refactoring your code into a class where you can define an interface.
  Consult Documentation: Refer to SAP documentation or help resources for more information on creating interfaces and the requirements for doing so.
  
  Related Information:
  
  ABAP Development: Familiarity with ABAP programming and object-oriented concepts in SAP is essential for understanding how to work with interfaces.
  SAP Notes: Check SAP Notes for any specific issues or patches related to the error message EC433.
  SAP Community: Engage with the SAP Community forums for insights and solutions from other developers who may have encountered similar issues.
  
  If the problem persists after checking these aspects, consider reaching out to your SAP support team or consulting with an experienced ABAP developer for further assistance.