1 / 28

Introduction to ABAP and SAP Structure

Introduction to ABAP and SAP Structure. What is the UOW?. SAP operates around the concept of a Unit of Work (UOW) Every transaction code you execute completes a unit of work It’s atomic (cannot be divided). That is, a transaction completes entirely or it does not!

burton-saunders
Download Presentation

Introduction to ABAP and SAP Structure

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Introduction to ABAP and SAP Structure

  2. What is the UOW? • SAP operates around the concept of a Unit of Work (UOW) • Every transaction code you execute completes a unit of work • It’s atomic (cannot be divided). That is, a transaction completes entirely or it does not! • A unit of work (transaction code) corresponds to a program (term used loosely)

  3. What’s a Transaction? • There is a 1-1 relationship between transaction code and a UOW program • A transaction • Has a corresponding program • Belongs to a package • Has an initial screen and possibly many others

  4. Organization of the SAP System (1) • It’s big • Use the Object Navigator to look at all of the SAP objects (SE80) • All sorts of tools to look up and edit applications • Typical ‘drill-down’ interface • My example will look at transaction code VA01 – create sales order

  5. Organization of the SAP System (2) • You have all of the source code and can see / change / enhance how the system works • All code is written in a language called ABAP or more recently some is written in Java

  6. Program Attributes(Package) • SAP packages, in the simplest case, allow you group programs, database tables, (and other things) together • SAP itself is organized into thousands of hierarchical packages • A program belongs to a package and has an owner • The package is defined when the program is saved for the first time • Use package $TMP for our “local” packages

  7. ABAP Program Attributes (Package) • Use Local Package $TMP for our work

  8. The Object Navigator • It’s a navigator to all SAP ‘objects’ (SE80) • The ‘Application Hierarchy’ is at the top and contains packages

  9. Object Navigator (Lookup Example 1) • Sales and Distribution (SD) / SALES is an Application Component

  10. Object Navigator (Lookup Example 2) • Which contains the program SAPMV45A (Sales Order Processing)

  11. Object Navigator (Lookup Example 3) • And the transaction code VA01 is bound to this program SAPMV45A • SE93 is used to look up a program based on the transaction code

  12. Object Navigator (Lookup Example 4) • Transaction code VA01 belongs to the package SAPMV45A • Having a default screen number of 101

  13. Object Navigator (Lookup Example 4) • Screen 101 from the Object Navigator is the first screen to create a sales order

  14. Object Navigator (Lookup Example 5) • Which when run gives us a screen simulation

  15. Object Navigator (Lookup Example 6) • Which looks is our first screen to create a sales order (VA01)

  16. How do we Customize? • We modify SAP programs via ‘enhancement sections’ and other means • We create custom programs • We copy entire transaction codes and ‘make our own

  17. Enhancement Sections • They are entry points into SAP programs that allow us to add our own code before or after some SAP task executes

  18. Creating a Custom Program • It’s a unified interface for creating, debugging, modifying, deploying, … ABAP programs • Use transaction code SE38

  19. Review (A First ABAP Program -1) • Create a program

  20. Review (A First ABAP Program -2) • Edit the program statements

  21. Review (A First ABAP Program -3) • Activate the application (Program / Activate)

  22. Review (A First ABAP Program -4) • Run it (F8) or (Program / Test / Direct Processing • A first report is displayed

  23. APAP Program Attributes (Introduction) • Every program that you create has metadata

  24. APAP Program Attributes (Program Type) • ABAP has it’s own program types • Executableprograms can be run independently of a transaction code • ModulePools are made up of processing steps and are executed from a transaction code • And other types of programs

  25. APAP Program Attributes (Program Status / Application) • Programstatus controls whether the program is a test (local) program deployed to production systems • Application controls where in the SAP hierarchy the program “lives”

  26. The ABAP Editor • It’s Visual Studio for SAP • A code editor • The clipboard works as we would expect • We can run and test programs inside of the ABAP editor

  27. ABAP Program Names • SAP has naming conventions for programs • Local programs should ALWAYS begin with the letters Y or Z (for customer)

  28. ABAP Syntax (Introduction) • Like most programming languages, we have variables, statements (sequence, decision, loops) • The language looks like the old COBOL language

More Related