1. Data declarations
* Document number
DATA: L_DOCNUM LIKE EDIDC-DOCNUM.
* Idoc data, status tables
DATA: itab_edidd LIKE TABLE OF EDIDD WITH HEADER LINE,
itab_edidc LIKE TABLE OF EDIDC WITH HEADER LINE,
itab_edids LIKE TABLE OF EDI_DS40 WITH HEADER LINE.
* Variables for field positioning
DATA: P_SUM TYPE N LENGTH 4,
I_POS type I,
I_SUM type I,
I_LEN type I.
2. Create select-option and parameters
tables EDIDC.
* Document number
select-options S_DOCNUM for EDIDC-DOCNUM
OBLIGATORY NO INTERVALS .
* Name of the segment
parameters P_SNAME(100) type C
OBLIGATORY .
* Value of the field
parameters P_SVALUE(999) type C
OBLIGATORY .
* Position of the field in the segment
parameters P_POS(004) type N
OBLIGATORY .
* Length of the field
parameters P_LEN(004) type N
OBLIGATORY .
3. Program
data: s_sel like line of S_DOCNUM.
* Loop over select options
loop at S_DOCNUM into s_sel.
CLEAR L_DOCNUM.
CLEAR itab_edidc.
CLEAR itab_edidd.
CLEAR itab_edidc.
* Asssign doc nbr
L_DOCNUM = s_sel-low.
IF L_DOCNUM IS NOT INITIAL.
CALL FUNCTION 'EDI_DOCUMENT_OPEN_FOR_EDIT'
EXPORTING
DOCUMENT_NUMBER = L_DOCNUM
* ALREADY_OPEN = 'N'
IMPORTING
IDOC_CONTROL = itab_edidc
TABLES
IDOC_DATA = itab_edidd
EXCEPTIONS
DOCUMENT_FOREIGN_LOCK = 1
DOCUMENT_NOT_EXIST = 2
DOCUMENT_NOT_OPEN = 3
STATUS_IS_UNABLE_FOR_CHANGING = 4
OTHERS = 5
.
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
LOOP AT itab_edidd.
IF itab_edidd-segnam = P_SNAME.
CLEAR P_SUM.
* Calculate position of field
I_POS = P_POS.
I_LEN = P_LEN.
I_SUM = I_POS + I_LEN.
P_SUM = I_SUM.
* Changing field value
CONCATENATE
itab_edidd-SDATA(P_POS)
P_SVALUE(P_LEN)
itab_edidd-SDATA+P_SUM INTO itab_edidd-SDATA
RESPECTING BLANKS.
* Modify table with segment contents
MODIFY itab_edidd.
EXIT.
ENDIF.
ENDLOOP.
CALL FUNCTION 'EDI_CHANGE_DATA_SEGMENTS'
TABLES
idoc_changed_data_range = itab_edidd
EXCEPTIONS
idoc_not_open = 1
data_record_not_exist = 2
OTHERS = 3.
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
CALL FUNCTION 'EDI_CHANGE_CONTROL_RECORD'
EXPORTING
idoc_changed_control = itab_edidc
EXCEPTIONS
idoc_not_open = 1
direction_change_not_allowed = 2
OTHERS = 3.
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
* Modify table with idoc status
REFRESH itab_edids.
itab_edids-docnum = L_DOCNUM.
itab_edids-status = 51.
itab_edids-repid = sy-repid.
itab_edids-mandt = sy-mandt.
itab_edids-tabnam = 'EDI_DS'.
itab_edids-stamqu = 'SAP'.
itab_edids-stamid = 'B1'.
itab_edids-stamno = 999.
itab_edids-stapa1 = ''.
itab_edids-stapa2 = ''.
itab_edids-logdat = sy-datum.
itab_edids-logtim = sy-uzeit.
APPEND itab_edids.
CALL FUNCTION 'EDI_DOCUMENT_CLOSE_EDIT'
EXPORTING
DOCUMENT_NUMBER = L_DOCNUM
DO_COMMIT = 'X'
DO_UPDATE = 'X'
WRITE_ALL_STATUS = 'X'
* STATUS_75 = '30'
TABLES
STATUS_RECORDS = itab_edids
EXCEPTIONS
IDOC_NOT_OPEN = 1
DB_ERROR = 2
OTHERS = 3.
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDIF.
endloop.
4. How to use selection screen
Example of modification of storage location in MBGMCR03 idoc (segment E1BP2017_GM_ITEM_CREATE).
Document number: provide all the document number (same type)
Segment name: E1BP2017_GM_ITEM_CREATE
Position of field STGE_LOC: 22 (Calculate all the previous fields in the segment 18+4)
Length field STGE_LOC: 4
Field value: name of storage location