EDI Delivery - Not raising error for invalid ISO UOM

Question

Standard SAP FM IDOC_OUTPUT_DELVRY include LV56KF62 performs Unit_of_measure_sap_to_iso but does not analyze the return code and incorrectly generates an invalid IDoc. The function called, unit_of_measure_sap_to_iso raises an error internally when the iso-code is invalid but an error message is not raised.
Is there a correction for this situation?
Standard SAP code follows:
((LV56KF62)
PERFORM UNIT_OF_MEASURE_SAP_TO_ISO USING    TAB_LIPS-VRKME
                                     CHANGING E1EDL24-VRKME.
(UNIT_OF_MEASURE_SAP_TO_ISO)
FORM UNIT_OF_MEASURE_SAP_TO_ISO USING VALUE(SAP_CODE) TYPE ANY
                                CHANGING    ISO_CODE  TYPE ANY.
  DATA: H_ISO_CODE LIKE T006-ISOCODE.
  CALL FUNCTION 'UNIT_OF_MEASURE_SAP_TO_ISO'
       EXPORTING
            SAP_CODE    = SAP_CODE
       IMPORTING
            ISO_CODE    = H_ISO_CODE
       EXCEPTIONS
            NOT_FOUND   = 1
            NO_ISO_CODE = 2
            OTHERS      = 3.
  IF ( SY-SUBRC IS INITIAL ).
    ISO_CODE = H_ISO_CODE.
  ELSE.
    CLEAR ISO_CODE.
  ENDIF.
ENDFORM.                               " UNIT_OF_MEASURE_SAP_TO_ISO
FUNCTION UNIT_OF_MEASURE_SAP_TO_ISO.
""Lokale Schnittstelle:
*"       IMPORTING
*"              SAP_CODE LIKE  T006-MSEHI
*"       EXPORTING
*"              ISO_CODE LIKE  T006-ISOCODE
*"       EXCEPTIONS
*"              NOT_FOUND
*"              NO_ISO_CODE
Deklarieren
  data: code(3) type c.
Maßeinheit bestimmen
  SELECT SINGLE * FROM T006
    WHERE MSEHI = SAP_CODE.
  IF   SY-SUBRC <> 0
    OR T006-ISOCODE IS INITIAL.
    move SAP_CODE to code.
    MESSAGE E035 WITH CODE                                  "B20K071649
      RAISING NOT_FOUND.
  ENDIF.
  ISO_CODE = T006-ISOCODE.
  IF ISO_CODE IS INITIAL.
    RAISE NO_ISO_CODE.
  ENDIF.
ENDFUNCTION.

Answer 1

I am afraid not, but eventually your IDoc should fail as it blanks out the unit if it cannot be converted to ISO code.