Function groups are containers for function modules. You cannot execute a function group. When you call an function module, the system loads the whole of its function group into the internal session of the calling program (if it has not already been loaded).
SAPL contains nothing but the INCLUDE statements for the following include programs:
LTOP. This contains the FUNCTION-POOL statement (equivalent for a function group of the REPORT or PROGRAM statement) and global data declarations for the entire function group.
LUXX. This contains further INCLUDE statements for the include programs LU01, LU02, … These includes contain the actual function modules.
The include programs LF01, LF02, … can contain the coding of subroutines that can be called with internal subroutine calls from all function modules of the group.
All of the function modules in a function group can access the global data of the group. For this reason, you should place all function modules that use the same data in a single function group. For example, if you have a set of function modules that all use the same internal table, you could place them in a function group containing the table definition in its global data.
Like executable programs (type 1) and module pools (type M), function groups can contain screens, selection screens, and lists. User input is processed either in dialog modules or in the corresponding event blocks in the main program of the function group. There are special include programs in which you can write this code. In this way, you can use function groups to encapsulate single screens or screen sequences.
A list of useful function modules. However, some of these are not available in 4.7
Trigger an event from ABAP/4 program.
Fetch job log executions filling the structure TBTC5.
Fetch values from a set filling the structure RGSB4.
Create a dialog box in which you make a question whether the user wishes to perform a processing step with loss of data.
Create a dialog box in which you make a question whether the user wishes to perform the step.
Create a dialog box in which you inform the user about a specific decision point during an action.
Create a dialog box in which you make a question whether the user wishes to perform a processing step with a particular object.
Create a dialog box in which you require the user between the two processing alternatives, or to cancel the action.
Create a dialog box in which you inform the user about a specific decision point via a diagnosis text.
Create a dialog box in which you display a two-line message.
Fetch information from the current instance filling the structure FRCSI.
Send messages from ABAP/4 programs to SAPoffice. The structure SOLI may contain the message.
Hang the current application from 1 to 5 seconds.
Submit a remote report.
Set progress indicator on the left lower corner of the current window.
Format terms of payment according to base line date and payment terms.
Browse printer spool numbers according to user informed.
Fetch printer spool according to the spool number informed.
List of all users filling the structure SOUD3.
Return the amount in words filling the structure SPELL.
Gather information from the current system including upgrade activities. It completes fields from the structure KKS03.
Gather information of all instances filling the structure MSXXLIST.
List of logged users filling the structure UINFO.
Information about the current user. It completes fields from the structure KKS03.
List of work processes filling the structure WPINFO.
Transfer files from the frontend to the application server.
Transfer files from the application server to the frontend.
Download files at the frontend in excel format.
Execute an external program on the presentation server.
Delete file at the frontend.
Get the label from a frontend device.
Create a dialog box in which you display an one-line message.
Get Customer names
Get material description
Read table Konv
Read Document flow
Check if a string is a number
Read a table via RFC
Read billing documents
- Use transaction BIBS to view different examples of user interface design from SAP.
- This transaction provides “Examples of the ergonomic interface setup” according to SAP.
- There are numerous examples for screens, menus, prompts, messages and many more elements.
Try the t-code PTRV_CALC to run Internal Calculator in SAP works on: 4.6B, 4.6C and 4.7
Run the following transactions for ABAP demo programs and related information
Works in 46c – Not available in 4.7 x110
- Run SE49 entering a transaction, program, function, etc.
- Execute it and the screen will display table list grouped by actions performed.
- Select table and then click the show code button to see how the transaction addresses the table.
- Double click on the table and it takes you into SE12 where you see the DDIC description of the tabel, from there you can follow the menu for Utilities / table contents which takes you into SE16 (general table display).
To debug a finished batch job
- Run tcode: SM37 and select for finished jobs.
- Select the job.
- In the command field, type JDBG and hit enter.
Do not use /n or /o.
This will simulate the exact background scenario with the same selection screen values as used in the job. SY-BATCH will be set to ‘X’.
Question: If a program (eg.: ZXYZ) calls a function module, can I access memory variables that are available in ZXYZ, but are not passed to the function module?
Here is a sample code to access an internal IT_DATA from ZXYZ
DATA: var_name(30) TYPE c VALUE ‘(ZXYZ)IT_DATA’.
TYPES: BEGIN OF st_data,
**** The same definition as IT_DATA in program
END OF st_data.
DATA: wa_data TYPE st_data.
FIELD-SYMBOLS: TYPE ANY TABLE.
ASSIGN (var_name) TO .
LOOP AT INTO wa_data.
WRITE : / wa_data.