SAP ABAP Interview Questions & Answers

SAP ABAP Interview Questions & Answers


Sap Abap Interview Questions

Collapse all
  • What Is An Abap Instance?

    When you call a function module, an instance of its function group plus its data, is loaded into the memory area of the internal session. An ABAP program can load several instances by calling function modules from different function groups.

  • What Is Sap R/3?

    SAP R/3 refers to Systems Application and Product for data processing Real-time having a 3 tier architecture i.e. Presentation layer, Application layer and Database layer.

  • What Are The Contents In Technical Specifications?

    There are five contents in Technical Settings:

    • Data Class
    • Size Category
    • Buffering Permission
    • Buffering Type and
    • Logging.
  • What Is Function Group? Difference Between Function Group And Function Module?

    Function Groups act as containers for Function Modules that logically belong together.
    Function Groups
    1) These cannot be defined in a Function Module.
    2) It cannot be called.
    3) They are containers for Function Module.
    Function Modules
    1) These must be defined in a Function Group.
    2) It can be called from any program.
    3) They are not containers for Function Group.

  • What Function Does Data Dictionary Perform?

    Central information repository for application and system data. The ABAP Dictionary contains data definitions (metadata) that allow you to describe all of the data structures in the system (like tables, views, and data types) in one place. This eliminates redundancy.

  • Difference Between Domain And Data Element? What Are Aggregate Object?

    Domain - Specifies the technical attributes of a data element - its data type, length, possible values, and appearance on the screen. Each data element has an underlying domain. A single domain can be the basis for several data elements. Domains are objects in the ABAP Dictionary.

    Data Element - Describes the business function of a table field. Its technical attributes are based on a domain, and its business function is described by its field labels and documentation.

    Aggregate Object – Views, Match Code and Lock objects are called aggregate objects because they are formed from several related table.

  • What Is View? Different Types Of View. Explain?

    View - A view is a virtual table containing fields from one or more tables. A virtual table that does not contain any data, but instead provides an application-oriented view of one or more ABAP Dictionary tables.

    Different Types of View:

    •  Maintenance
    •  Database – It is on more than two tables.
    •  Projection – It is only on one table.
    •  Help
  • Can You Print Decimals In Type N? What Is Difference Between Float And Packed Data Type?

    No, we cannot print decimals in type N because decimal places are not permitted with N data type.

    Float Data Type: It cannot be declared in Parameters.

    Packed Number: It can be declared in Parameters.

    For e.g.

    PARAMETERS : A(4) TYPE P DECIMALS 2, B(4) TYPE P DECIMALS 2.

    DATA : C(4) TYPE P DECIMALS 2.

    C = A + B.

    WRITE : / ‘THE SUM IS’ , C.

  • What Are The Different Functions Used In Sap Script? What Are The Parameters Used In Each Function?

    There are three different functions used in SAP Script:

    1. OPEN_FORM
    2. WRITE_FORM
    3. CLOSE_FORM

    Parameters in Each Function:

    1. OPEN_FORM
      • Exporting
      • Form
      • Language
    2. WRITE_FORM
      • Exporting
      • Element
      • Window
    3. CLOSE_FORM
  • What Is Sequence Of Event Triggered In Report?

    There are 6 events in report:

    1.  Initialization
    2.  At Selection-Screen
    3.  Start-of-Selection
    4.  Get
    5.  Get Late
    6.  End-of-Selection
    7.  Top-of-Page
    8.  End-of-Page
    9.  At Line Selection
    10.  At User Command
    11.  At PF (nn)

  • What Are Standard Layouts Sets In The Sap Script?

    There are four standard layouts in the SAP Script:

    1.  Header
    2.  Logo
    3.  Main Window
    4.  Footer
  • What Are The Various Types Of Selection Screen Event?

    SELECTION-SCREEN BEGIN OF BLOCK ABC WITH FRAME TITLE T01.

    SELECTION-SCREEN BEGIN OF SCREEN 500 AS WINDOW.

    CALL SELECTION-SCREEN 500 STARTING AT 10 10.

  • What Are The System Fields? Explain?

    The ABAP system fields are active in all ABAP programs. They are filled by the runtime environment, and you can query their values in a program to find out particular states of the system. Although they are variables, you should not assign your own values to them, since this may overwrite information that is important for the normal running of the program. However, there are some isolated cases in which you may need to overwrite a system variable. For example, by assigning a new value to the field SY-LSIND, you can control navigation within details lists.

  • Difference Between Sap Script And Report?

    SAP Script – It is the integrated text management system of the SAP R/3 System.
    Two types:

    • PC Editor
    •  Line Editor.


    Reports - It is the way to display data fetched from database table onto screen or directly output it to a printer.
    Two types:

    • Classical
    •  Interactive.
  • Difference Between Sy-tabix And Sy-index? Where It Is Used? Can You Check Sy-subrc After Perform?

    SY-TABIX - Current line of an internal table. SY-TABIX is set by the statements below, but only for index tables. The field is either not set or is set to 0 for hashed tables.

    * APPEND sets SY-TABIX to the index of the last line of the table, that is, it contains the overall number of entries in the table.
    * COLLECT sets SY-TABIX to the index of the existing or inserted line in the table. If the table has the type HASHED TABLE, SY-TABIX is set to 0.
    * LOOP AT sets SY-TABIX to the index of the current line at the beginning of each loop loss. At the end of the loop, SY-TABIX is reset to the value that it had before entering the loop. It is set to 0 if the table has the type HASHED TABLE.
    * READ TABLE sets SY-TABIX to the index of the table line read. If you use a binary search, and the system does not find a line, SY-TABIX contains the total number of lines, or one more than the total number of lines. SY-INDEX is undefined if a linear search fails to return an entry.
    * SEARCH FOR sets SY-TABIX to the index of the table line in which the search string is found.

    SY_INDEX - In a DO or WHILE loop, SY-INDEX contains the number of loop passes including the current pass.

  • Explain What Is A Logical Database?

    • Logical Databases are special ABAP programs that retrieve data and make it available to application programs.
    • Use of LDB – is used to read data from database tables by linking them to executable ABAP programs
  • Explain What Are The Events Used For Logical Database?

    There are Two Events:

    1. GET - This is the most important event for executable programs that use a logical database. It occurs when the logical database has read a line from the node and made it available to the program in the work area declared using the statement NODES table Tag. The depth to which the logical database read is determined by the GET statements
    2. PUT - The PUT statement directs the program flow according to the structure of the logical database.
  • What Is The Difference Between Get And Get Late?

    GET - After the logical database has read an entry from the node table Tag.

    GET LATE - After all the nodes of the logical database have been processed that are below <table> in the database hierarchy.

  • What Are The Data Types Of Internal Tables?

    There are three types:

    1.  Line
    2.  Key
    3.  Table

  • What Are The Events Used In Abap In The Order Of Execution?

    The Events used in ABAP are:

    1. INITIALIZATION
    2. AT SELECTION-SCREEN
    3. AT SELECTION-SCREEN ON <field>
    4. START-OF-SELECTION
    5. TOP-OF-PAGE
    6. TOP-OF-PAGE DURING LINE SELECTION
    7. END-OF-PAGE
    8. END-OF-SELECTION
    9. AT USER-COMMAND
    10. AT LINE-SELECTION
    11. AT PF<NN>
    12. GET
    13. GET LATE.
    14. AT User Command

List of Topics