What is "No dialog module found" message?

Question

Hi,
I'm trying to update a record in pa0558 table using hr_infotype_operation.
The code looks something like this:
  SELECT SINGLE MAX( begda ) FROM pa0558 INTO begda WHERE pernr = pernr.
  SELECT SINGLE endda FROM pa0558 INTO endda WHERE pernr = pernr AND begda = begda.
  CLEAR i0558.
  i0558-pernr = pernr.
  i0558-infty = '0558'.
  i0558-begda = begda.
  i0558-endda = endda.
  i0558-nip00 = nip00.
  i0558-subty = ''.
  i0558-objps = ''.
  i0558-sprps = ''.
  i0558-seqnr = '000'.
  i0558-pesel = '77040642811'.
  CALL FUNCTION 'HR_INFOTYPE_OPERATION'
    EXPORTING
      infty         = '0558'
      number        = pernr
      validityend   = endda
      validitybegin = begda
      subtype       = ''
      recordnumber  = '000'
      record        = i0558
      operation     = 'MOD'
      tclas         = 'A'
      nocommit      = ' '
    IMPORTING
      return        = hr_return
      key           = key.
etc.
The problem is that no data is being updated, and the following message is being shown during debug: "No dialog module found ".
What does it mean? Does it mean that something is missing, not installed or I don't know what else?
Regards
Ladislav
PS. I'm new to ABAP.

Answer 1

sample code
<b>  loop  at ia586.
    move-corresponding ia586 to p0586.
    CALL FUNCTION 'HR_EMPLOYEE_ENQUEUE'
      EXPORTING
        NUMBER = p0586-pernr.
    CALL FUNCTION 'HR_INFOTYPE_OPERATION'
      EXPORTING
        INFTY         = '0586'
        NUMBER        = p0586-pernr
        LOCKINDICATOR = ''
        VALIDITYEND   = p0586-endda
        VALIDITYBEGIN = p0586-begda
        RECORD        = p0586
        OPERATION     = 'INS'
        NOCOMMIT      = ''
        tclas         = 'A'
      IMPORTING
        RETURN        = RETURN
      EXCEPTIONS
        OTHERS        = 0.
    CALL FUNCTION 'HR_EMPLOYEE_ENQUEUE'
      EXPORTING
        NUMBER = p0586-pernr.
    clear : p0586.
  endloop.</b>
Regards
Prabhu