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PBO (Process Before Output) and PAI (Process After Input) Events

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PBO (Process Before Output) and PAI (Process After Input) Events
Stechies

PBO and PAI are two events used for designing the screens in SAP ABAP Module Pool Programming. Every Dynpro screen has a set of  PBO and PAI modules.

Note: One PBO & One PAI allowed for a Screen

What is PBO Event?

PBO (Process Before Output) determines the flow logic or execute modules before displaying the screen. This event is used for displaying the fields from the program to the screen. User can build the GUI status in PBO.

Example of PBO

PROCESS BEFORE OUTPUT.
  MODULE INIT_FIELDS.
Self-programmed F1 Help

Important T-codes of PBO

T-code Des Functional Area
SE51 Screen Painter BC - Screen Painter
SE80 Object Navigator BC - Repository Browser
SE38 ABAP Editor BC - ABAP Editor
ABAPDOCU Display ABAP Documentation BC - Syntax, Compiler, Runtime
FMOD Override FM Update Date PSM - Funds Management
SMOD SAP Enhancement Management BC - Customer Enhancements
ME21N Create Purchase Order MM - Purchasing
FMRP_RFFMTO30X pboF - Ann.Bdgt vs Cmmts/Acts Totals PSM - Information system
ME32K Change Contract MM - Purchasing
CMOD Enhancements BC - Customer Enhancements

What is PAI Event?

PAI (Process After Input) determines the flow logic execute modules after the display of the screen and after receiving inputs from the User. This event is used to write the code for the User actions on the screen. In PAI data moves from screen to program.

Example of PAI

PROCESS AFTER INPUT.
* Lock customer master record
CHAIN.
  FIELD GSSG-KTNRG
        MODULE ENQUEUE_CUSTOMER_MASTER.

Important T-codes of PAI

T-code Des Functional Area
SE51 screen painter BC - Screen Painter
SE80 Object Navigator BC - Repository Browser
SE38 ABAP Editor BC - ABAP Editor
SE11 ABAP Dictionary Maintenance BC - Dictionary Maintenance
SMOD SAP Enhancement Management BC - Customer Enhancements
ME21N Create Purchase Order MM - Purchasing
SE37 ABAP Function Modules BC - Function Builder
DBG_SCREEN_PAINTER Debugger -> screen painter BC - Syntax, Compiler, Runtime
SE41 Menu painter BC - Menu Painter
MIGO Goods Movement MM - Inventory Management


Comments

  • 23 Apr 2010 4:23 pm
    Thank you very much for your post! , I had a hard time finding what those acronyms mean.
  • 04 Dec 2010 7:58 am
    sir,
    Please give me the link to see the screen shots of PBO & PAI events in Dialog Programming

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