ABAP Select data from SAP table ICATAXREPPST into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICATAXREPPST table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to ICATAXREPPST. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the ICATAXREPPST table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_ICATAXREPPST TYPE STANDARD TABLE OF ICATAXREPPST,
      WA_ICATAXREPPST TYPE ICATAXREPPST,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <ICATAXREPPST> TYPE ICATAXREPPST.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ICATAXREPPST.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ICATAXREPPST
  INTO TABLE IT_ICATAXREPPST.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICATAXREPPST
*  INTO TABLE @DATA(IT_ICATAXREPPST2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_ICATAXREPPST INDEX 1 INTO DATA(WA_ICATAXREPPST2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ICATAXREPPST ASSIGNING <ICATAXREPPST>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICATAXREPPST>-MANDT = 1.
<ICATAXREPPST>-CADOCUMENTNUMBER = 1.
<ICATAXREPPST>-CAGLITEMNUMBER = 1.
<ICATAXREPPST>-BUSINESSPARTNER = 1.
<ICATAXREPPST>-CATAXREPORTINGDETAILINGASSGMT = 1.

ENDLOOP.

LOOP AT IT_ICATAXREPPST INTO WA_ICATAXREPPST.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICATAXREPPST-CATAXREPORTINGITEMSEQUENCENMBR, sy-vline,
  WA_ICATAXREPPST-CAAPPLICATIONAREA, sy-vline,
  WA_ICATAXREPPST-COMPANYCODE, sy-vline,
  WA_ICATAXREPPST-BUSINESSPLACE, sy-vline,
  WA_ICATAXREPPST-GLACCOUNT, sy-vline,
  WA_ICATAXREPPST-TAXCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICATAXREPPST you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_ICATAXREPPST TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_ICATAXREPPST INTO WA_ICATAXREPPST.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field CADOCUMENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICATAXREPPST-CADOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICATAXREPPST-CADOCUMENTNUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICATAXREPPST-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICATAXREPPST-BUSINESSPARTNER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GLACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICATAXREPPST-GLACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICATAXREPPST-GLACCOUNT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CAREFERENCEDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICATAXREPPST-CAREFERENCEDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICATAXREPPST-CAREFERENCEDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CATRIGGEREDDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICATAXREPPST-CATRIGGEREDDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICATAXREPPST-CATRIGGEREDDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CARELATEDDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICATAXREPPST-CARELATEDDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICATAXREPPST-CARELATEDDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CATRANSFERREDDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICATAXREPPST-CATRANSFERREDDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICATAXREPPST-CATRANSFERREDDOCUMENT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ICATAXREPPST_STR, 
MANDT TYPE STRING,
CADOCUMENTNUMBER TYPE STRING,
CAGLITEMNUMBER TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CATAXREPORTINGDETAILINGASSGMT TYPE STRING,
CATAXREPORTINGITEMSEQUENCENMBR TYPE STRING,
CAAPPLICATIONAREA TYPE STRING,
COMPANYCODE TYPE STRING,
BUSINESSPLACE TYPE STRING,
GLACCOUNT TYPE STRING,
TAXCODE TYPE STRING,
CAOTHERTAXCODE TYPE STRING,
CATAXRATE TYPE STRING,
CATAXBASEAMOUNTINLOCALCURRENCY TYPE STRING,
CATAXBASEAMOUNT TYPE STRING,
CATAXAMOUNTINLOCALCURRENCY TYPE STRING,
CATAXAMOUNTINTRANSCURRENCY TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CASOURCEDOCUMENTPOSTINGDATE TYPE STRING,
CASOURCEDOCUMENTDATE TYPE STRING,
CANETDUEDATE TYPE STRING,
CAPLANNEDTAXREPORTDATE TYPE STRING,
CATAXREPORTINGADDITIONALTEXT TYPE STRING,
CAREFERENCEDOCUMENT TYPE STRING,
CATRANSACTIONKEYACCOUNTDETN TYPE STRING,
CATAXITEMCATFOROTHERTAXCODES TYPE STRING,
TAXJURISDICTION TYPE STRING,
CAENTEREDTAXJURISDICTIONCODE TYPE STRING,
CATRIGGEREDDOCUMENT TYPE STRING,
CATAXREPORTINGITEMCATEGORY TYPE STRING,
CATAXREPORTLISTITEM TYPE STRING,
CARELATEDDOCUMENT TYPE STRING,
CADOCUMENTHASBEENREVERSED TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
CADOCUMENTDATAISOUTDATED TYPE STRING,
CAAMOUNTPERTAXCODEINCCCRCY TYPE STRING,
CAAMOUNTPERTAXCODEINTRANSCRCY TYPE STRING,
CAOFFICIALDOCAMOUNTINCCCRCY TYPE STRING,
CAOFFICIALDOCAMOUNTINTRANSCRCY TYPE STRING,
CATRANSFERREDDOCUMENT TYPE STRING,
CATRANSFERREDDOCUMENTITEM TYPE STRING,
CADOWNPAYMENTDOCUMENTITEM TYPE STRING,
TAXCOUNTRY TYPE STRING,
CHARTOFACCOUNTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICATAXREPPST_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_ICATAXREPPST_STR-MANDT sy-vline 
WA_ICATAXREPPST_STR-CADOCUMENTNUMBER sy-vline 
WA_ICATAXREPPST_STR-CAGLITEMNUMBER sy-vline 
WA_ICATAXREPPST_STR-BUSINESSPARTNER sy-vline 
WA_ICATAXREPPST_STR-CATAXREPORTINGDETAILINGASSGMT sy-vline 
WA_ICATAXREPPST_STR-CATAXREPORTINGITEMSEQUENCENMBR sy-vline 
WA_ICATAXREPPST_STR-CAAPPLICATIONAREA sy-vline 
WA_ICATAXREPPST_STR-COMPANYCODE sy-vline 
WA_ICATAXREPPST_STR-BUSINESSPLACE sy-vline 
WA_ICATAXREPPST_STR-GLACCOUNT sy-vline 
WA_ICATAXREPPST_STR-TAXCODE sy-vline 
WA_ICATAXREPPST_STR-CAOTHERTAXCODE sy-vline 
WA_ICATAXREPPST_STR-CATAXRATE sy-vline 
WA_ICATAXREPPST_STR-CATAXBASEAMOUNTINLOCALCURRENCY sy-vline 
WA_ICATAXREPPST_STR-CATAXBASEAMOUNT sy-vline 
WA_ICATAXREPPST_STR-CATAXAMOUNTINLOCALCURRENCY sy-vline 
WA_ICATAXREPPST_STR-CATAXAMOUNTINTRANSCURRENCY sy-vline 
WA_ICATAXREPPST_STR-COMPANYCODECURRENCY sy-vline 
WA_ICATAXREPPST_STR-TRANSACTIONCURRENCY sy-vline 
WA_ICATAXREPPST_STR-CASOURCEDOCUMENTPOSTINGDATE sy-vline 
WA_ICATAXREPPST_STR-CASOURCEDOCUMENTDATE sy-vline 
WA_ICATAXREPPST_STR-CANETDUEDATE sy-vline 
WA_ICATAXREPPST_STR-CAPLANNEDTAXREPORTDATE sy-vline 
WA_ICATAXREPPST_STR-CATAXREPORTINGADDITIONALTEXT sy-vline 
WA_ICATAXREPPST_STR-CAREFERENCEDOCUMENT sy-vline 
WA_ICATAXREPPST_STR-CATRANSACTIONKEYACCOUNTDETN sy-vline 
WA_ICATAXREPPST_STR-CATAXITEMCATFOROTHERTAXCODES sy-vline 
WA_ICATAXREPPST_STR-TAXJURISDICTION sy-vline 
WA_ICATAXREPPST_STR-CAENTEREDTAXJURISDICTIONCODE sy-vline 
WA_ICATAXREPPST_STR-CATRIGGEREDDOCUMENT sy-vline 
WA_ICATAXREPPST_STR-CATAXREPORTINGITEMCATEGORY sy-vline 
WA_ICATAXREPPST_STR-CATAXREPORTLISTITEM sy-vline 
WA_ICATAXREPPST_STR-CARELATEDDOCUMENT sy-vline 
WA_ICATAXREPPST_STR-CADOCUMENTHASBEENREVERSED sy-vline 
WA_ICATAXREPPST_STR-CREATIONDATE sy-vline 
WA_ICATAXREPPST_STR-CREATIONTIME sy-vline 
WA_ICATAXREPPST_STR-CADOCUMENTDATAISOUTDATED sy-vline 
WA_ICATAXREPPST_STR-CAAMOUNTPERTAXCODEINCCCRCY sy-vline 
WA_ICATAXREPPST_STR-CAAMOUNTPERTAXCODEINTRANSCRCY sy-vline 
WA_ICATAXREPPST_STR-CAOFFICIALDOCAMOUNTINCCCRCY sy-vline 
WA_ICATAXREPPST_STR-CAOFFICIALDOCAMOUNTINTRANSCRCY sy-vline 
WA_ICATAXREPPST_STR-CATRANSFERREDDOCUMENT sy-vline 
WA_ICATAXREPPST_STR-CATRANSFERREDDOCUMENTITEM sy-vline 
WA_ICATAXREPPST_STR-CADOWNPAYMENTDOCUMENTITEM sy-vline 
WA_ICATAXREPPST_STR-TAXCOUNTRY sy-vline 
WA_ICATAXREPPST_STR-CHARTOFACCOUNTS sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.