ABAP Select data from SAP table BAPI_CTRACPSINVDOC_H into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPI_CTRACPSINVDOC_H 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_CTRACPSINVDOC_H. 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_CTRACPSINVDOC_H 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_CTRACPSINVDOC_H TYPE STANDARD TABLE OF BAPI_CTRACPSINVDOC_H,
      WA_BAPI_CTRACPSINVDOC_H TYPE BAPI_CTRACPSINVDOC_H,
      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_CTRACPSINVDOC_H> TYPE BAPI_CTRACPSINVDOC_H.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPI_CTRACPSINVDOC_H
*  INTO TABLE @DATA(IT_BAPI_CTRACPSINVDOC_H2).
*--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_CTRACPSINVDOC_H INDEX 1 INTO DATA(WA_BAPI_CTRACPSINVDOC_H2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPI_CTRACPSINVDOC_H>-INV_DOCNO = 1.
<BAPI_CTRACPSINVDOC_H>-APPL_AREA = 1.
<BAPI_CTRACPSINVDOC_H>-INV_PROCESS = 1.
<BAPI_CTRACPSINVDOC_H>-INV_TYPE = 1.
<BAPI_CTRACPSINVDOC_H>-INV_CATEGORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPI_CTRACPSINVDOC_H-BUSINESS_PARTNER, sy-vline,
  WA_BAPI_CTRACPSINVDOC_H-CONT_ACCT, sy-vline,
  WA_BAPI_CTRACPSINVDOC_H-COLL_ACCT, sy-vline,
  WA_BAPI_CTRACPSINVDOC_H-SUB_DOC, sy-vline,
  WA_BAPI_CTRACPSINVDOC_H-CREATED_BY, sy-vline,
  WA_BAPI_CTRACPSINVDOC_H-CREATE_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPI_CTRACPSINVDOC_H 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_CTRACPSINVDOC_H 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_CTRACPSINVDOC_H INTO WA_BAPI_CTRACPSINVDOC_H.


*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 BUSINESS_PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_CTRACPSINVDOC_H-BUSINESS_PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_CTRACPSINVDOC_H-BUSINESS_PARTNER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit EXBEL, internal->external for field EXT_DOCNO
CALL FUNCTION 'CONVERSION_EXIT_EXBEL_OUTPUT'
  EXPORTING
    input =                      WA_BAPI_CTRACPSINVDOC_H-EXT_DOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPI_CTRACPSINVDOC_H-EXT_DOCNO.
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_BAPI_CTRACPSINVDOC_H_STR, 
INV_DOCNO TYPE STRING,
APPL_AREA TYPE STRING,
INV_PROCESS TYPE STRING,
INV_TYPE TYPE STRING,
INV_CATEGORY TYPE STRING,
BUSINESS_PARTNER TYPE STRING,
CONT_ACCT TYPE STRING,
COLL_ACCT TYPE STRING,
SUB_DOC TYPE STRING,
CREATED_BY TYPE STRING,
CREATE_DATE TYPE STRING,
CREATE_TIME TYPE STRING,
CREATE_MODE TYPE STRING,
RECONCILIATION_KEY TYPE STRING,
POST_DATE TYPE STRING,
DOC_DATE TYPE STRING,
NET_DATE TYPE STRING,
DISCOUNT_DUE_DATE TYPE STRING,
DISCOUNT_RATE TYPE STRING,
TOTAL_CURRENCY TYPE STRING,
TOTAL_CURRENCY_ISO TYPE STRING,
TOTAL_AMOUNT TYPE STRING,
X_INVOICED TYPE STRING,
X_SIMULATED TYPE STRING,
REVERSE_REASON TYPE STRING,
REVERSAL_DOC TYPE STRING,
REVERSED_DOC TYPE STRING,
PRINT_DATE TYPE STRING,
X_PRINTLOCK TYPE STRING,
PAYMENT_METHOD TYPE STRING,
PAYMENT_FORMNO TYPE STRING,
FORM_KEY TYPE STRING,
ATTACHED_FORMID TYPE STRING,
DOC_TYPE TYPE STRING,
EXT_KEYID TYPE STRING,
EXT_DOCNO TYPE STRING,
INV_PERIOD_CAT TYPE STRING,
INV_PERIOD TYPE STRING,
INV_PERIOD_FROM TYPE STRING,
DUN_COUNT TYPE STRING,
X_CHARGEDOC TYPE STRING,
X_CTRLDOC TYPE STRING,
X_ARCHIVED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPI_CTRACPSINVDOC_H_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_CTRACPSINVDOC_H_STR-INV_DOCNO sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-APPL_AREA sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-INV_PROCESS sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-INV_TYPE sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-INV_CATEGORY sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-BUSINESS_PARTNER sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-CONT_ACCT sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-COLL_ACCT sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-SUB_DOC sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-CREATED_BY sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-CREATE_DATE sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-CREATE_TIME sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-CREATE_MODE sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-RECONCILIATION_KEY sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-POST_DATE sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-DOC_DATE sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-NET_DATE sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-DISCOUNT_DUE_DATE sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-DISCOUNT_RATE sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-TOTAL_CURRENCY sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-TOTAL_CURRENCY_ISO sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-TOTAL_AMOUNT sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-X_INVOICED sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-X_SIMULATED sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-REVERSE_REASON sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-REVERSAL_DOC sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-REVERSED_DOC sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-PRINT_DATE sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-X_PRINTLOCK sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-PAYMENT_METHOD sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-PAYMENT_FORMNO sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-FORM_KEY sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-ATTACHED_FORMID sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-DOC_TYPE sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-EXT_KEYID sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-EXT_DOCNO sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-INV_PERIOD_CAT sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-INV_PERIOD sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-INV_PERIOD_FROM sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-DUN_COUNT sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-X_CHARGEDOC sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-X_CTRLDOC sy-vline 
WA_BAPI_CTRACPSINVDOC_H_STR-X_ARCHIVED sy-vline      INTO ld_text SEPARATED BY SPACE.

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