How To Fix ADT_DATAPREVIEW_MSG011 - AMDP Data Preview appears only for public AMDP methods

SAP Error Message - Details

• Message type: E = Error

• Message class: ADT_DATAPREVIEW_MSG - Messsage Class for data preview

• Message number: 011

• Message text: AMDP Data Preview appears only for public AMDP methods

Self-Explanatory Message

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• What is the cause and solution for SAP error message ADT_DATAPREVIEW_MSG011 - AMDP Data Preview appears only for public AMDP methods ?

  The SAP error message ADT_DATAPREVIEW_MSG011 indicates that the Data Preview feature in the ABAP Development Tools (ADT) is only available for public AMDP (ABAP Managed Database Procedures) methods. This means that if you are trying to preview data from a private or protected AMDP method, you will encounter this error.
  Cause:
  The primary cause of this error is that the AMDP method you are trying to preview is not declared as PUBLIC. In ABAP, access modifiers control the visibility of methods and attributes. Only public methods can be accessed from outside the class, and in the context of ADT, only public methods can be used for data preview.
  Solution:
  To resolve this error, you need to ensure that the AMDP method you are trying to preview is declared as PUBLIC. Here’s how you can do that:
  
  
  Open the Class/Interface: Open the ABAP class or interface where the AMDP method is defined.
  
  
  Change the Access Modifier: Locate the AMDP method and change its access modifier from PROTECTED or PRIVATE to PUBLIC. The method declaration should look something like this:
  CLASS my_class DEFINITION
    FINAL
    FOR DATABASE PROCEDURES
    CREATE PUBLIC.
  
  PUBLIC SECTION.
    INTERFACES if_my_interface.
    METHODS my_amdp_method
      BY DATABASE PROCEDURE
      FOR HDB
      LANGUAGE SQLSCRIPT
      RETURNING VALUE(result) TYPE TABLE.
  
  
  Activate the Changes: After making the changes, activate the class or interface.
  
  
  Retry Data Preview: Now, try to use the Data Preview feature again on the AMDP method.
  
  
  Related Information:
  
  AMDP Overview: AMDP allows you to define database procedures in ABAP that can be executed on the database server. This is particularly useful for leveraging database-specific features and performance optimizations.
  Access Modifiers in ABAP: Understanding access modifiers (PUBLIC, PROTECTED, PRIVATE) is crucial for managing visibility and encapsulation in ABAP classes.
  ADT Features: The ABAP Development Tools provide various features for development, including data previews, which help developers visualize data returned by database procedures.
  
  By ensuring that your AMDP methods are public, you can take full advantage of the Data Preview functionality in ADT.