Here is a set of two documents with question and answers for TAW10.  It will definitely help you to improve your ABAP skills.

Download ABAP Basics (1029) & ABAP Objects (575).

You usually get these dumps in ST22 with the runtime error as CONVT_CODEPAGE and it says that the character set conversion is not possible. So, how to we get rid of these errors?

These errors are caused when you try to download the file with some special characters in the unicode system. When SAP system is not able to convert the special characters, it ends up with this system dump.

Just add the clause IGNORE CONVERSION ERRORS when you try to open the dataset and all these special characters which cannot be converted into a specific code page will be skipped. You can also add the clause REPLACEMENT CHARACTER space, with this addition, all the special non convertible characters will simply be replaced with space.

ABAP_DOCU_DOWNLOAD – Download ABAP documentation in HTML format.

ARFC_GET_TID – will return the IP address of the terminal in hex.

BAL_* – All function modules used for SAP’s application logging can be found here.

BP_EVENT_RAISE – Trigger an event from ABAP/4 program

BP_JOBLOG_READ – Fetch job log executions

CLOI_PUT_SIGN_IN_FRONT – Place the negative sign after a number. SAP default is place the negative sign after the number.

CLPB_EXPORT – Export a text table to the clipboard (on presentation server)

CLPB_IMPORT – Import a Text Table from the Clipboard (on presentation server)

COMMIT_TEXT – To load long text into SAP
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SAP Function modules are procedures that are defined in function groups (special ABAP programs with type F) and can be called from any ABAP program. Function groups act as containers for function modules that logically belong together. You create function groups and function modules in the ABAP Workbench using the Function Builder.

Function modules allow you to encapsulate and reuse global functions in the R/3 System. They are stored in a central library. The R/3 System contains a wide range of predefined function modules that you can call from any ABAP program. Function modules also play an important role in database updates and in remote communications between R/3 Systems or between an R/3 System and a non-SAP system. Unlike subroutines, you do not define function modules in the source code of your program.

Find here some useful ABAP Function Modules! – Download Important SAP Function Modules (1939).

Here is a new collection of ABAP Tutorials.