Function modules are always helpful, specially when dealing a complex module like ABAP HR. Thanks to SAP that has provided strong Function Module support.
Here is the list of some useful ABAP HR function modules:
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
Function Modules related to (ALV) ADVANCED 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
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
IDWT_READ_MONTH_TEXT: Get the MONTH Text
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
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 Conversion
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
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
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 Application Server.
ALSM_EXCEL_TO_INTERNAL_TABLE: Legacy Data Transfer w/ Excel
WS_FILE_DELETE: Delete files on UNIX server
PFL_COPY_OS_FILE: Copy UNIX files
EPS_GET_DIRECTORY_LISTING: Returns all files from a Server directory
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 F4 Help
F4IF_INT_TABLE_VALUE_REQUEST – F4 help also returning the value to be displayed in internal table
Function Modules related to data maintenance
VIEW_MAINTENANCE_CALL – To maintain data from a table