ABAP Select data from SAP table /SAPTRX/BAPI_EH_ERROR_MSG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPTRX/BAPI_EH_ERROR_MSG 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 /SAPTRX/BAPI_EH_ERROR_MSG. 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 /SAPTRX/BAPI_EH_ERROR_MSG 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_/SAPTRX/BAPI_EH_ERROR_MSG TYPE STANDARD TABLE OF /SAPTRX/BAPI_EH_ERROR_MSG,
      WA_/SAPTRX/BAPI_EH_ERROR_MSG TYPE /SAPTRX/BAPI_EH_ERROR_MSG,
      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: </SAPTRX/BAPI_EH_ERROR_MSG> TYPE /SAPTRX/BAPI_EH_ERROR_MSG.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPTRX/BAPI_EH_ERROR_MSG
  INTO TABLE IT_/SAPTRX/BAPI_EH_ERROR_MSG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPTRX/BAPI_EH_ERROR_MSG
*  INTO TABLE @DATA(IT_/SAPTRX/BAPI_EH_ERROR_MSG2).
*--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_/SAPTRX/BAPI_EH_ERROR_MSG INDEX 1 INTO DATA(WA_/SAPTRX/BAPI_EH_ERROR_MSG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPTRX/BAPI_EH_ERROR_MSG ASSIGNING </SAPTRX/BAPI_EH_ERROR_MSG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPTRX/BAPI_EH_ERROR_MSG>-EH_GUID = 1.
</SAPTRX/BAPI_EH_ERROR_MSG>-SEQ_NBR = 1.
</SAPTRX/BAPI_EH_ERROR_MSG>-MSG_ACTIVE = 1.
</SAPTRX/BAPI_EH_ERROR_MSG>-MSG_TYPE = 1.
</SAPTRX/BAPI_EH_ERROR_MSG>-MSG_CLASS = 1.

ENDLOOP.

LOOP AT IT_/SAPTRX/BAPI_EH_ERROR_MSG INTO WA_/SAPTRX/BAPI_EH_ERROR_MSG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPTRX/BAPI_EH_ERROR_MSG-MSG_NBR, sy-vline,
  WA_/SAPTRX/BAPI_EH_ERROR_MSG-MSG_ARG1, sy-vline,
  WA_/SAPTRX/BAPI_EH_ERROR_MSG-MSG_ARG2, sy-vline,
  WA_/SAPTRX/BAPI_EH_ERROR_MSG-MSG_ARG3, sy-vline,
  WA_/SAPTRX/BAPI_EH_ERROR_MSG-MSG_ARG4, sy-vline,
  WA_/SAPTRX/BAPI_EH_ERROR_MSG-MSG_DATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPTRX/BAPI_EH_ERROR_MSG 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_/SAPTRX/BAPI_EH_ERROR_MSG 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_/SAPTRX/BAPI_EH_ERROR_MSG INTO WA_/SAPTRX/BAPI_EH_ERROR_MSG.


*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 TSTPS, internal->external for field MSG_DATE
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/BAPI_EH_ERROR_MSG-MSG_DATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/BAPI_EH_ERROR_MSG-MSG_DATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTPS, internal->external for field UPDATED_DATE
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/BAPI_EH_ERROR_MSG-UPDATED_DATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/BAPI_EH_ERROR_MSG-UPDATED_DATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPTRX/BAPI_EH_ERROR_MSG-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPTRX/BAPI_EH_ERROR_MSG-LANGUAGE.
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_/SAPTRX/BAPI_EH_ERROR_MSG_STR, 
EH_GUID TYPE STRING,
SEQ_NBR TYPE STRING,
MSG_ACTIVE TYPE STRING,
MSG_TYPE TYPE STRING,
MSG_CLASS TYPE STRING,
MSG_NBR TYPE STRING,
MSG_ARG1 TYPE STRING,
MSG_ARG2 TYPE STRING,
MSG_ARG3 TYPE STRING,
MSG_ARG4 TYPE STRING,
MSG_DATE TYPE STRING,
UPDATED_DATE TYPE STRING,
UPDATED_BY TYPE STRING,
EVENT_MSG_GUID TYPE STRING,
RULE_ID TYPE STRING,
PROCEDURE_ID TYPE STRING,
TASK_ID TYPE STRING,
FUNCTION_ID TYPE STRING,
TASK_NBR TYPE STRING,
EVENT_CODE TYPE STRING,
EE_SEQ_NBR TYPE STRING,
TEXTLINE TYPE STRING,
LANGUAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPTRX/BAPI_EH_ERROR_MSG_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_/SAPTRX/BAPI_EH_ERROR_MSG_STR-EH_GUID sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-SEQ_NBR sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-MSG_ACTIVE sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-MSG_TYPE sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-MSG_CLASS sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-MSG_NBR sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-MSG_ARG1 sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-MSG_ARG2 sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-MSG_ARG3 sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-MSG_ARG4 sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-MSG_DATE sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-UPDATED_DATE sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-UPDATED_BY sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-EVENT_MSG_GUID sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-RULE_ID sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-PROCEDURE_ID sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-TASK_ID sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-FUNCTION_ID sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-TASK_NBR sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-EVENT_CODE sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-EE_SEQ_NBR sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-TEXTLINE sy-vline 
WA_/SAPTRX/BAPI_EH_ERROR_MSG_STR-LANGUAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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