public String execute() throws Exception {
    // ---------------------------------------------------------------------
    // Get File Excel
    // ---------------------------------------------------------------------

    String path = selectionManager.getUploadFilePath();

    if (path != null && path != "") {
      fileExcel = new File(path);
    }

    // ---------------------------------------------------------------------
    // Validate selected OrganisationUnit
    // ---------------------------------------------------------------------

    organisationUnit = organisationUnitSelectionManager.getSelectedOrganisationUnit();

    if (organisationUnit == null) {
      return SUCCESS;
    }

    // ---------------------------------------------------------------------
    // Load and sort ImportReports
    // ---------------------------------------------------------------------

    importReports =
        new ArrayList<ImportReport>(importReportService.getImportReports(organisationUnit));

    return SUCCESS;
  }