Useful ABAP Function Modules

This page is intended to maintain documentation of useful function modules. This is needed because indexing and search of information will be easier here (When compared to searching in SE37). When this page starts growing, this can be structured in an area wise list.

Function Module to execute unauthorized transactions

TRANSACTION_CALL_VIA_RFC

To execute some unauthorized transactions.

Function Modules for creating programs
(Useful when you are generating programs)

RS_PROGRAM_CHECK_NAME	To check program names if you are generating them.
RS_CORR_INSERT	To insert the correction request in the repository.
REPS_OBJECT_ACTIVATE	To activate repository objects, for example - to activate a newly generated program.
RS_DELETE_PROGRAM	To delete the program.
RS_ACCESS_PERMISSION	To lock or unlock a program.

Function Modules related to Date and Time Calculations

CALCULATE_DATE	Calculates the future date based on the input .
DATE_TO_DAY	Returns the Day for the entered date.
DATE_COMPUTE_DAY	Returns weekday for a date
DATE_GET_WEEK	Returns week for a date
RP_CALC_DATE_IN_INTERVAL	Add days / months to a date
DAY_ATTRIBUTES_GET	Returns attributes for a range of dates specified
MONTHS_BETWEEN_TWO_DATES	To get the number of months between the two dates.
END_OF_MONTH_DETERMINE_2	Determines the End of a Month.
HR_HK_DIFF_BT_2_DATES	Find the difference between two dates in years, months and days.
FIMA_DAYS_AND_MONTHS_AND_YEARS	Find the difference between two dates in years, months and days.
MONTH_NAMES_GET	Get the names of the month
WEEK_GET_FIRST_DAY	Get the first day of the week
HRGPBS_HESA_DATE_FORMAT	Format the date in dd/mm/yyyy format
SD_CALC_DURATION_FROM_DATETIME	Find the difference between two date/time and report the difference in hours
L_MC_TIME_DIFFERENCE	Find the time difference between two date/time
HR_99S_INTERVAL_BETWEEN_DATES	Difference between two dates in days, weeks, months
LAST_DAY_OF_MONTHS	Returns the last day of the month
DATE_CHECK_PLAUSIBILITY	Check for the invalid date.
DATE_2D_TO_4D_CONVERSION	Year entry: 2-character to 4-character.
DAY_IN_WEEK	Input date and will give the name of the day 1-monday,2-Tuesday....
SD_DATETIME_DIFFERENCE	Give the difference in Days and Time for 2 dates

Holidays and Factory Calendar

HOLIDAY_GET	Gives holidays for a country.It has two flags Freeday(for weekends)and Holiday(for public holidays).
FACTORYDATE_CONVERT_TO_DATE	returns the calendar date for the factory date and the factory calendar passed
DATE_CONVERT_TO_FACTORYDATE	returns the factory date for the date and factory calendar passed

Popup for dates

F4_DATE	Displays a popup dialog to choose date
POPUP_TO_SELECT_MONTH	Display a pop-up to select a month

Function Modules related to (ALV) SAP LIST VIEWER

REUSE_ALV_LIST_DISPLAY	ABAP List viewer (LIST DISPLAY)
REUSE_ALV_GRID_DISPLAY	ALV GridControl full screen
REUSE_ALV_FIELDCATALOG_MERGE	Create field catalog from dictionary structure or internal table

Function Module related to Change Tracking

CHANGEDOCUMENT_READ_HEADERS	Read and format change documents
CHANGEDOCUMENT_READ	read change document headers and items to get the old and new values

Function Modules Related To Formatting

CLOI_PUT_SIGN_IN_FRONT	Displays the negative sign in front of the numeral
RKD_WORD_WRAP	Wrap text into several lines
CONVERSION_EXIT_ALPHA_INPUT	Pad zeros to the number at the left
CONVERSION_EXIT_ALPHA_OUTPUT	Eliminate zeros to the number at the left
READ_EXCHANGE_RATE	Exchange Convertion
SPELL_AMOUNT	Transforms numeric values into text

Function Modules Related To Dialog Prompts

POPUP_TO_CONFIRM	Displays a popup dialog with a user defined message for confirmation
POPUP_TO_GET_VALUE	Displays a popup dialog requesting a value for a particular table-fieldname
SAPGUI_PROGRESS_INDICATOR	Displays a progress bar with text to denote the percentage of completion and status
FILENAME_GET	Displays a popup dialog to get the presentation server filename
F4_DATE	Displays a popup dialog to choose date
POPUP_TO_SELECT_MONTH	Display a pop-up to select a month
GET_PRINT_PARAMETERS	Printer parameters
F4IF_INT_TABLE_VALUE_REQUEST	F4 help also returning the value to be displayed in internal table
F4IF_FIELD_VALUE_REQUEST	F4 help for fields that are only known at runtime

Function modules related to RFC communication

RFC_CONNECTION_CLOSE	Close a RFC connection
RFC_GET_SYSTEM_INFO	Give system's information of a remote system

{+}Function modules related to reading/writing files on application server (named AS below) or Frontend +

FILE_READ_AND_CONVERT_SAP_DATA	Uploads the file from either presentation or application server into an internal table
SUBST_GET_FILE_LIST	To get the list of files from AS
ALSM_EXCEL_TO_INTERNAL_TABLE	Legacy Data Transfer w/ Excel
WS_FILE_DELETE	Delete files on AS server
PFL_COPY_OS_FILE	Copy AS files
EPS_GET_DIRECTORY_LISTING	Returns all files from an AS directory
FILENAME_GET	Displays a popup dialog to get an AS filename (FILE transaction)
GUI_UPLOAD	Upload a file from the presentation server
GUI_DOWNLOAD	Downloads an Internal Table to the PC

Function Modules related to sending emails

SO_NEW_DOCUMENT_ATT_SEND_API1	Sends emails with texts and attachments
SO_NEW_DOCUMENT_SEND_API1	Sends emails with texts.

Function Modules related to data maintenance

VIEW_MAINTENANCE_CALL

To maintain data from a table or view (SM30)

Amount and Currency

CURRENCY_AMOUNT_SAP_TO_IDOC	Convert currency to IDOC format
CLOI_PUT_SIGN_IN_FRONT	Move the negative sign from the left hand side of a number, to the right hand side of the number. Note that The result will be left justified (like all character fields), not right justifed as numbers normally are.
CONVERT_TO_FOREIGN_CURRENCY	Convert local currency to foreign currency.
CONVERT_TO_LOCAL_CURRENCY	Convert from foreign currency to local currency
CONVERT_AMOUNT_TO_CURRENCY	Convert an amount from a currency to another (exchange rate taken from database tables)
CONVERT_CURRENCY_BY_RATE	Convert an amount from a currency to another, according to the passed exchange rate
BAPI_CURRENCY_CONV_TO_EXTERNAL	Conversion of Currency Amounts into External Data Format
BAPI_CURRENCY_CONV_TO_INTERNAL	Conversion of Currency Amounts into Internal Data Format
CALCULATE_TAX_FROM_NET_AMOUNT
SPELL_AMOUNT	to get Amount in words
HR_IN_CHG_INR_WRDS	Changes INR amount to words.

Function Modules related to FI, CO and SD Modules

FOR_ALL_SKC1A	Account subtotal
VC_I_GET_CONFIGURATION	Sales Purchase details configuration
SD_PRINT_TERMS_OF_PAYMENT	Print terms for unique payment
SD_PRINT_TERMS_OF_PAYMENT_SPLI	Print terms for some parcels payment
J_1B_NF_DOCUMENT_READ	Read NF details
J_1B_NF_VALUE_DETERMINATION	Read values from NF returned combined with J_1B_NF_DOCUMENT_READ using.

Function Module related to HR-ABAP

HR_MAINTAIN_MASTERDATA	This function module is used to maintain master data for employees and applicants.
HR_READ_INFOTYPE	This function module reads the data records of an HR infotype that exist for employees and applicants.
HR_INFOTYPE_OPERATION	This function module is used to maintain employees and applicants data.
CU_READ_RGDIR	This function module is used to read RGDIR of cluster CU.
PYXX_READ_PAYROLL_RESULT	This function module reads complete payroll result for all country versions, from file PCL2 cluster.
HR_GET_PAYROLL_RESULTS	This function module is used to fetch the payroll results for employees .
HR_RELATION_MAINTAIN	This function module is to maintain the relation between employee and position.
BAPI_HRMASTER_SAVE_REPL_MULT	This function module is to create position or organizaion unit ect.