How To Fix ENHANCEMENT020 - Only types E, C and S are allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: ENHANCEMENT - SAP customer enhancement project messages

• Message number: 020

• Message text: Only types E, C and S are allowed

What causes this issue?

There are no enhancement components for the type you have entered.
At the current time, the following types are supported:
E: Function exits
C: Menu enhancements
S: Screen enhancements

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 ENHANCEMENT020 - Only types E, C and S are allowed ?

  The SAP error message ENHANCEMENT020 indicates that there is an issue with the types of enhancements being used in your ABAP code. Specifically, this error occurs when an enhancement is defined with an invalid type. The valid types for enhancements in SAP are:
  
  E: Exit
  C: Customer exit
  S: SAP enhancement
  
  Cause
  The error typically arises when:
  
  An enhancement is defined with a type that is not one of the allowed types (E, C, S).
  There is a mismatch in the enhancement implementation or definition.
  The enhancement framework is being used incorrectly, such as trying to use a type that is not supported.
  
  Solution
  To resolve the ENHANCEMENT020 error, you can follow these steps:
  
  
  Check Enhancement Definition: Review the enhancement definition in your ABAP code. Ensure that the enhancement type is correctly specified as E, C, or S.
  
  
  Correct the Type: If you find that the enhancement type is incorrectly defined, change it to one of the valid types (E, C, or S).
  
  
  Review Implementation: If you are implementing an enhancement, ensure that the implementation matches the defined type. For example, if you are trying to implement a customer exit, make sure it is defined as a customer exit (C).
  
  
  Use Transaction SE18/SE19: You can use transaction codes SE18 (Enhancement Spot) and SE19 (Implementation) to manage enhancements. Check the enhancement spots and implementations to ensure they are correctly set up.
  
  
  Check for Syntax Errors: Sometimes, syntax errors in the code can lead to this error. Ensure that your ABAP code is free of syntax errors.
  
  
  Consult Documentation: If you are unsure about the enhancement types or how to implement them, refer to the SAP documentation or help resources for guidance.
  
  
  Related Information
  
  Enhancements in ABAP: Enhancements allow developers to add custom functionality to standard SAP applications without modifying the original code. This is done through various types of enhancements, including user exits, customer exits, and BAdIs (Business Add-Ins).
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to the ENHANCEMENT020 error.
  ABAP Development Guidelines: Familiarize yourself with the best practices for ABAP development, especially regarding enhancements and modifications.
  
  By following these steps, you should be able to resolve the ENHANCEMENT020 error and ensure that your enhancements are correctly implemented in your SAP environment.