ABAP Select data from SAP table BAPI_INCINV_CHNG_HEADERX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPI_INCINV_CHNG_HEADERX 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 BAPI_INCINV_CHNG_HEADERX. 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 BAPI_INCINV_CHNG_HEADERX 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_BAPI_INCINV_CHNG_HEADERX TYPE STANDARD TABLE OF BAPI_INCINV_CHNG_HEADERX,
      WA_BAPI_INCINV_CHNG_HEADERX TYPE BAPI_INCINV_CHNG_HEADERX,
      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: <BAPI_INCINV_CHNG_HEADERX> TYPE BAPI_INCINV_CHNG_HEADERX.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_INCINV_CHNG_HEADERX
*  INTO TABLE @DATA(IT_BAPI_INCINV_CHNG_HEADERX2).
*--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_BAPI_INCINV_CHNG_HEADERX INDEX 1 INTO DATA(WA_BAPI_INCINV_CHNG_HEADERX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_INCINV_CHNG_HEADERX>-DOC_TYPE = 1.
<BAPI_INCINV_CHNG_HEADERX>-DOC_DATE = 1.
<BAPI_INCINV_CHNG_HEADERX>-PSTNG_DATE = 1.
<BAPI_INCINV_CHNG_HEADERX>-REF_DOC_NO = 1.
<BAPI_INCINV_CHNG_HEADERX>-DIFF_INV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_INCINV_CHNG_HEADERX-CURRENCY, sy-vline,
  WA_BAPI_INCINV_CHNG_HEADERX-CURRENCY_ISO, sy-vline,
  WA_BAPI_INCINV_CHNG_HEADERX-EXCH_RATE, sy-vline,
  WA_BAPI_INCINV_CHNG_HEADERX-EXCH_RATE_V, sy-vline,
  WA_BAPI_INCINV_CHNG_HEADERX-GROSS_AMOUNT, sy-vline,
  WA_BAPI_INCINV_CHNG_HEADERX-CALC_TAX_IND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_INCINV_CHNG_HEADERX 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_BAPI_INCINV_CHNG_HEADERX 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_BAPI_INCINV_CHNG_HEADERX INTO WA_BAPI_INCINV_CHNG_HEADERX.


*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.
ENDFORM. 

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

TYPES: BEGIN OF T_BAPI_INCINV_CHNG_HEADERX_STR, 
DOC_TYPE TYPE STRING,
DOC_DATE TYPE STRING,
PSTNG_DATE TYPE STRING,
REF_DOC_NO TYPE STRING,
DIFF_INV TYPE STRING,
CURRENCY TYPE STRING,
CURRENCY_ISO TYPE STRING,
EXCH_RATE TYPE STRING,
EXCH_RATE_V TYPE STRING,
GROSS_AMOUNT TYPE STRING,
CALC_TAX_IND TYPE STRING,
PMNTTRMS TYPE STRING,
BLINE_DATE TYPE STRING,
DSCT_DAYS1 TYPE STRING,
DSCT_DAYS2 TYPE STRING,
NETTERMS TYPE STRING,
DSCT_PCT1 TYPE STRING,
DSCT_PCT2 TYPE STRING,
HEADER_TXT TYPE STRING,
PMNT_BLOCK TYPE STRING,
DEL_COSTS TYPE STRING,
DEL_COSTS_TAXC TYPE STRING,
DEL_COSTS_TAXJ TYPE STRING,
PERSON_EXT TYPE STRING,
PYMT_METH TYPE STRING,
PMTMTHSUPL TYPE STRING,
INV_DOC_NO TYPE STRING,
SCBANK_IND TYPE STRING,
SUPCOUNTRY TYPE STRING,
BLLSRV_IND TYPE STRING,
REF_DOC_NO_LONG TYPE STRING,
DSCT_AMOUNT TYPE STRING,
PO_SUB_NO TYPE STRING,
PO_CHECKDG TYPE STRING,
PO_REF_NO TYPE STRING,
PAYEE_PAYER TYPE STRING,
PARTNER_BK TYPE STRING,
HOUSEBANKID TYPE STRING,
ALLOC_NMBR TYPE STRING,
PAYMT_REF TYPE STRING,
INV_REF_NO TYPE STRING,
INV_YEAR TYPE STRING,
INV_REC_DATE TYPE STRING,
PLANNING_LEVEL TYPE STRING,
PLANNING_DATE TYPE STRING,
FIXEDTERMS TYPE STRING,
BUS_AREA TYPE STRING,
LOT_NUMBER TYPE STRING,
ITEM_TEXT TYPE STRING,
J_1BNFTYPE TYPE STRING,
EU_TRIANG_DEAL TYPE STRING,
REPCOUNTRY TYPE STRING,
VAT_REG_NO TYPE STRING,
BUSINESS_PLACE TYPE STRING,
TAX_EXCH_RATE TYPE STRING,
GOODS_AFFECTED TYPE STRING,
VATDATE TYPE STRING,
TAX_CALC_DATE TYPE STRING,
HOUSEBANKACCTID TYPE STRING,
GST_PART TYPE STRING,
PLC_SUP TYPE STRING,
IRN TYPE STRING,
FULFILLDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_INCINV_CHNG_HEADERX_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_BAPI_INCINV_CHNG_HEADERX_STR-DOC_TYPE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-DOC_DATE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PSTNG_DATE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-REF_DOC_NO sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-DIFF_INV sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-CURRENCY sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-CURRENCY_ISO sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-EXCH_RATE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-EXCH_RATE_V sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-GROSS_AMOUNT sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-CALC_TAX_IND sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PMNTTRMS sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-BLINE_DATE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-DSCT_DAYS1 sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-DSCT_DAYS2 sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-NETTERMS sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-DSCT_PCT1 sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-DSCT_PCT2 sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-HEADER_TXT sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PMNT_BLOCK sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-DEL_COSTS sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-DEL_COSTS_TAXC sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-DEL_COSTS_TAXJ sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PERSON_EXT sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PYMT_METH sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PMTMTHSUPL sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-INV_DOC_NO sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-SCBANK_IND sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-SUPCOUNTRY sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-BLLSRV_IND sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-REF_DOC_NO_LONG sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-DSCT_AMOUNT sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PO_SUB_NO sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PO_CHECKDG sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PO_REF_NO sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PAYEE_PAYER sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PARTNER_BK sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-HOUSEBANKID sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-ALLOC_NMBR sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PAYMT_REF sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-INV_REF_NO sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-INV_YEAR sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-INV_REC_DATE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PLANNING_LEVEL sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PLANNING_DATE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-FIXEDTERMS sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-BUS_AREA sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-LOT_NUMBER sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-ITEM_TEXT sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-J_1BNFTYPE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-EU_TRIANG_DEAL sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-REPCOUNTRY sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-VAT_REG_NO sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-BUSINESS_PLACE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-TAX_EXCH_RATE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-GOODS_AFFECTED sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-VATDATE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-TAX_CALC_DATE sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-HOUSEBANKACCTID sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-GST_PART sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-PLC_SUP sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-IRN sy-vline 
WA_BAPI_INCINV_CHNG_HEADERX_STR-FULFILLDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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