60+ SAP Abap Developer Interview Questions and Answers

Objects generated after TMG creation in SAP ABAP

• After creating a TMG (Table Maintenance Generator), a function group is generated.

• The function group contains function modules for maintenance screens, list displays, and authorization checks.

• A maintenance view is also generated, which is used to maintain the table data.

• A maintenance dialog is created, which is used to display the maintenance screens.

• A maintenance object is generated, which is used to store the maintenance dialo...read more

At selection screen event is used to capture user input before executing a report.

• At selection screen event is triggered before the selection screen is displayed to the user.

• It is used to validate user input and set default values for selection screen parameters.

• It can also be used to dynamically modify the selection screen based on user input.

• Example: At selection screen event can be used to restrict the input values for a parameter to a specific range.

• Example: At selection ...read more

Authorization objects in ABAP control access to objects for assigned users, preventing unauthorized access.

• Authorization objects are used to control access to specific objects in ABAP programs.

• They define which users have access to certain objects and what actions they can perform.

• Authorization objects are assigned to roles, which are then assigned to users.

• Examples of authorization objects include S_PROGRAM for program access and S_TABU_DIS for table maintenance access.

To retrieve a previous version of a smartform in SAP ABAP, you can use the transport request system.

• Use the transport request system to track changes and versions of smartforms.

• Identify the transport request containing the previous version of the smartform.

• Import the transport request to revert back to the previous version.

• Ensure to test the smartform after reverting to the previous version.

Containers are used in ABAP development to display output on the screen.

• Containers are used to hold and display UI elements in ABAP programs.

• They can be used to display text, images, tables, and other UI components.

• Containers can be added to screens using the SAP GUI for Windows or Web Dynpro ABAP technology.

• Example: DATA container TYPE REF TO cl_gui_container.

• Example: container->add( text ).

Control break statement should be used with caution inside a loop in SAP Abap

• Ensure that the control break statement is used only when necessary

• Make sure that the loop is not too large as it can impact performance

• Test the code thoroughly to ensure that the control break statement is working as expected

Debugging background jobs using Tcode JDBG in SAP ABAP.

• Go to transaction code JDBG in SAP system.

• Enter the job name and job count of the background job you want to debug.

• Set breakpoints in the ABAP code of the background job.

• Execute the background job and it will stop at the breakpoints for debugging.

• Use standard debugging tools like variables, watchpoints, etc. to analyze and troubleshoot the job.

BAPI is a standard interface provided by SAP while Customer Exit is a user-defined enhancement point.

• BAPI is used for accessing SAP functions and data while Customer Exit is used for customizing SAP standard functionality.

• BAPI is a pre-defined interface while Customer Exit is a user-defined interface.

• BAPI is used for external communication while Customer Exit is used for internal communication.

• Examples of BAPI include BAPI_PO_CREATE1, BAPI_MATERIAL_SAVEDATA, etc. while exampl...read more

I have worked on various requirements in enhancements.

• Implemented custom logic to enhance standard SAP functionality

• Developed user exits and BAdIs to add additional functionality

• Enhanced existing reports and forms to meet specific business requirements

• Integrated external systems with SAP using enhancement techniques

• Worked on performance enhancements to optimize system performance

Smartforms are a tool in SAP ABAP used to create and maintain forms for printing purposes.

• Smartforms are used to design and generate forms like invoices, purchase orders, etc.

• Different windows in smartforms include main window, secondary window, and table window.

• Main window is the primary area where the form content is displayed.

• Secondary window is used for additional information like headers or footers.

• Table window is used to display tabular data in a structured format.

ABAP dumps can be analyzed using transaction codes ST22/ST23 in SAP.

• Use transaction code ST22/ST23 to access the ABAP dump analysis tool.

• Review the short dump overview to see a list of recent dumps.

• Click on a specific dump to view detailed information such as error messages, program flow, and variables.

• Analyze the dump to identify the root cause of the issue and take necessary actions to resolve it.

Technical aspects of SAP ABAP development including implementation projects, enhancements, ABAP core, and transaction codes.

• Implementation projects involve customizing SAP systems to meet specific business requirements.

• Enhancements are modifications made to standard SAP programs to add new functionality.

• ABAP core refers to the basic programming language used in SAP development.

• Transaction codes are shortcuts to access specific functions in SAP systems.

• Example: Implementing a ...read more

SAP is a software company that provides enterprise resource planning solutions. Tools used include SAP ABAP, SAP HANA, SAP Fiori, etc.

• SAP stands for Systems, Applications, and Products in Data Processing

• SAP offers a range of tools for various functions such as SAP ABAP for programming, SAP HANA for database management, SAP Fiori for user interface design

• SAP solutions help businesses streamline processes, improve efficiency, and make data-driven decisions

Customer exits can be found using transaction code SMOD or CMOD.

• Transaction code SMOD or CMOD can be used to find customer exits.

• Enter the name of the enhancement in the 'Enhancement' field and click on 'Components' button.

• The customer exits available for the enhancement will be displayed.

• Alternatively, you can also search for customer exits using transaction code SE84.

• Enter the name of the customer exit in the 'Exit Name' field and click on 'Find' button.

• The customer exit wi...read more

BADi is a technology used to enhance standard SAP applications while RFC is a protocol used to communicate between systems.

• BADi is used to add custom functionality to standard SAP applications without modifying the original code

• RFC is used to communicate between SAP and non-SAP systems

• BADi is implemented using ABAP code while RFC can be implemented using various programming languages

• BADi is executed within the same system while RFC can be executed between different systems

• Exa...read more

Smartforms are used in SAP ABAP development to create and customize forms for printing.

• Smartforms are a tool in SAP ABAP used to design and generate forms for printing.

• They provide a graphical interface for designing the layout and content of the form.

• Smartforms support various output formats such as PDF, HTML, and print.

• They can be used to create invoices, purchase orders, delivery notes, and other business documents.

• Smartforms can include dynamic data, tables, graphics, and...read more

Smartforms are more advanced and user-friendly than scripts in SAP ABAP development.

• Smartforms have a graphical interface for designing forms, while scripts use a plain text editor.

• Smartforms support more complex formatting options and dynamic content, while scripts are more limited.

• Smartforms can be previewed and tested directly in the development environment, while scripts need to be executed to see the output.

• Smartforms can be easily transported between systems using trans...read more

Reports and events in interactive reports are key components for displaying and interacting with data in SAP ABAP.

• Reports in interactive reports are used to display data in a tabular format with various columns and rows.

• Events in interactive reports are triggered based on user actions, such as clicking on a column header or selecting a row.

• Events can be used to perform actions like sorting data, filtering data, or navigating to detailed information.

• Examples of events in inter...read more

Reports in SAP ABAP are used to display data in a structured format.

• Reports are created using the ABAP report programming.

• They can be used to display data from database tables, internal tables, or other sources.

• Reports can be interactive or non-interactive.

• They can be executed in the background or foreground.

• Examples of reports include financial statements, inventory reports, and sales reports.

Technical settings in the data dictionary are used to define the structure and behavior of database objects in SAP ABAP.

• Technical settings include attributes like data type, length, and decimal places for fields in database tables.

• They also include settings for key fields, indexes, and foreign key relationships.

• Technical settings can be used to enforce data integrity and optimize performance.

• Examples of technical settings in the data dictionary include defining a field as a d...read more

A marker interface is an empty interface that marks a class as having a particular property or behavior.

• Marker interfaces do not have any methods or properties.

• They are used to provide metadata to the compiler or runtime environment.

• Examples include Serializable, Cloneable, and Remote interfaces in Java.

• Marker interfaces can also be used to indicate that a class belongs to a certain group or category.

To debug code or errors in SAP ABAP, use tools like ABAP Debugger, breakpoints, watchpoints, and display statements.

• Use ABAP Debugger to step through the code line by line and analyze variables.

• Set breakpoints at specific lines of code to pause execution and inspect the program state.

• Use watchpoints to monitor changes in specific variables during runtime.

• Insert display statements to output variable values to the debugger console for inspection.

Smart Forms is a tool in SAP ABAP used to create and print forms.

• Smart Forms is a graphical tool used to create and maintain forms in SAP systems.

• It allows the creation of forms with dynamic content, such as tables, graphics, and barcodes.

• Smart Forms can be used to print documents such as invoices, purchase orders, and delivery notes.

• It provides a user-friendly interface for designing and formatting forms.

• Smart Forms can be integrated with other SAP modules such as Sales and ...read more

Creating a module pool program involves designing screens, defining flow logic, and linking them together.

• Design screens using Screen Painter transaction SE51

• Define flow logic using ABAP code in PBO (Process Before Output) and PAI (Process After Input) modules

• Link screens together using flow logic and navigation statements like CALL SCREEN and LEAVE TO SCREEN

Partner number in IDOCs represents the unique identifier of the partner system or business partner.

• Partner number is used to identify the sender or receiver of the IDOC.

• It is typically a numerical or alphanumeric value assigned to each partner system or business partner.

• Partner number is crucial for routing and processing IDOCs correctly.

• For example, in a sales order IDOC, the partner number may represent the customer or vendor involved.

Functional interface is a type of interface in Java that contains only one abstract method.

• Functional interface can have any number of default or static methods.

• It is used for implementing lambda expressions and functional programming in Java.

• Examples of functional interfaces include Runnable, Comparator, and Callable.

• Functional interface can be annotated with @FunctionalInterface annotation to ensure it contains only one abstract method.

Material data is stored in table MARA in SAP.

• Material data is stored in table MARA in SAP.

• MARA table contains general material data like material number, description, unit of measure, etc.

• Additional material data like purchasing, sales, inventory, etc., are stored in other related tables.

To check if a string is a palindrome, compare the string with its reverse.

• Create a function to reverse the input string.

• Compare the original string with the reversed string to check for palindrome.

• Example: 'madam' is a palindrome as it reads the same backward and forward.

An interactive report is a type of report in SAP ABAP that allows users to interact with the data displayed, while a module pool report is a collection of screens and flow logic used for creating interactive applications.

• Interactive report: Allows users to interact with the data displayed

• Module pool report: Collection of screens and flow logic for creating interactive applications

• Interactive report can have user input fields, drill-down functionality, and sorting options

• Modul...read more

SD Flow is the Sales and Distribution process flow in SAP.

• The process starts with creating a sales order

• The order is then checked for availability of stock

• If stock is available, delivery is created and goods are shipped

• Invoice is generated and payment is received

• Finally, accounting entries are posted

• SD Flow integrates with other modules like MM and FI

• SD Flow is critical for businesses dealing with sales and distribution

OData is a protocol for building and consuming RESTful APIs.

• OData stands for Open Data Protocol

• It allows for the creation and consumption of RESTful APIs

• OData services are typically used to expose data from SAP systems to external applications

Types of tables include transparent, pooled, and cluster tables. Types of views include database views and projection views.

• Types of tables: transparent tables store data directly in the database, pooled tables store data in a pool shared by multiple tables, cluster tables store data from multiple tables in a single table

• Types of views: database views are virtual tables based on select statements, projection views are used for specific fields from one or more tables

DDIC summary and steps to create DB Table

• DDIC stands for Data Dictionary in SAP

• Steps to create a DB table: 1. Go to transaction SE11 2. Enter table name and click create 3. Enter fields and save

• DDIC is used to define and manage database objects in SAP system

Yes, as an SAP ABAP Developer, I can enhance standard programs by adding custom functionality.

• Identify the standard program to be enhanced

• Analyze the requirements for custom functionality

• Implement the enhancements using ABAP code

• Test the enhanced program to ensure it meets the requirements

OOPS stands for Object-Oriented Programming System, BADI stands for Business Add-Ins, and BDC stands for Batch Data Communication.

• OOPS is a programming paradigm that uses objects and classes to design applications.

• BADI is a mechanism in SAP that allows developers to add additional functionality to standard SAP programs without modifying them.

• BDC is a method used to transfer data from external systems into SAP.

• Example: Using OOPS in SAP ABAP allows for better code organization...read more

OOPS stands for Object-Oriented Programming System. SMARTFORMS is a tool used for creating and maintaining forms in SAP.

• OOPS is a programming paradigm that uses objects and classes for code organization and reusability.

• SMARTFORMS is a tool in SAP used for creating and maintaining forms like invoices, purchase orders, etc.

• OOPS allows for encapsulation, inheritance, and polymorphism in programming.

• SMARTFORMS provide a user-friendly interface for designing forms with data fields...read more

RICEF stands for Reports, Interfaces, Conversions, Enhancements, and Forms. SMART FORMS is a tool used for creating and maintaining forms in SAP systems.

• RICEF is a methodology used in SAP projects to categorize different types of development objects.

• Reports are used to extract data from SAP systems.

• Interfaces are used to transfer data between SAP and external systems.

• Conversions are used to convert data from one format to another.

• Enhancements are used to customize standard SA...read more

Reports, BDC, and Smartforms are tools used in SAP ABAP development for generating and displaying data.

• Reports are programs used to display data in a structured format.

• BDC (Batch Data Communication) is used for uploading data from external sources into SAP systems.

• Smartforms are used for creating and formatting printable forms in SAP applications.

User exits are older technology, while BAdIs are newer and more flexible.

• User exits are static, while BAdIs are dynamic and can be implemented multiple times.

• User exits require modification of standard SAP code, while BAdIs do not.

• BAdIs can be implemented without modifying the original code, making them more flexible.

• BAdIs can be filtered based on specific criteria, while user exits cannot.

• BAdIs are object-oriented, while user exits are procedural.

To swap two variables without using a third variable

• Use arithmetic operations to swap values

• Example: a = a + b; b = a - b; a = a - b;

Singleton class is a class that can only have one instance created at a time.

• Singleton class ensures that only one instance of the class is created throughout the application.

• It provides a global point of access to the instance.

• Commonly used in scenarios where a single point of control is needed, such as logging, database connections, or configuration settings.

Function modules are reusable blocks of code in SAP ABAP used to perform specific tasks.

• Function modules can be called from any ABAP program using the CALL FUNCTION statement.

• There are two types of function modules: normal and remote-enabled.

• Normal function modules are executed in the same system where they are called, while remote-enabled function modules can be called from a different system.

• Function modules can have importing, exporting, changing, and tables parameters.

• Exa...read more

ALV stands for ABAP List Viewer, a tool used to display data in tabular format in SAP reports.

• ALV is used to enhance the readability and usability of reports by displaying data in a structured format.

• It allows users to sort, filter, and customize the display of data according to their requirements.

• ALV can display data in various formats such as grid, list, tree, etc.

• It provides features like column resizing, column freezing, subtotaling, and exporting data to Excel.

• ALV can be...read more

A function module is a self-contained unit of code that performs a specific task and can be called from other programs.

• Function modules are similar to subroutines or functions in other programming languages.

• They are used to encapsulate and reuse code.

• Function modules can be called from other ABAP programs or from external systems.

• They can have input and output parameters, as well as exceptions.

• Examples of function modules include BAPIs (Business Application Programming Interf...read more

Field symbols in SAP ABAP are placeholders for data objects that allow for dynamic assignment at runtime.

• Field symbols are used to point to a data object without actually storing the data itself.

• They are declared using the FIELD-SYMBOLS statement.

• Field symbols are particularly useful for dynamic programming and working with internal tables.

• They can be assigned to any data object at runtime, allowing for flexibility in coding.

• Example: FIELD-SYMBOLS TYPE any.

• Example: ASSIGN T...read more

Buffering is a technique used to temporarily store data in memory for faster access.

• Buffering helps reduce the number of database reads by storing frequently accessed data in memory.

• There are different types of buffering in SAP like single record buffering, generic buffering, and full buffering.

• Example: Buffering can be used in SAP to store frequently accessed customer data in memory for faster retrieval.

Function modules in SAP ABAP are categorized into different types based on their functionality and usage.

• Remote-enabled function modules

• Local function modules

• Grouped function modules

• RFC function modules

• Update function modules