public String getConfirmRemoveUser( HttpServletRequest request )
    {
        String strIdUnit = request.getParameter( PARAMETER_ID_UNIT );
        String strIdUser = request.getParameter( PARAMETER_ID_USER );

        if ( StringUtils.isBlank( strIdUnit ) || !StringUtils.isNumeric( strIdUnit ) || StringUtils.isBlank( strIdUser )
                || !StringUtils.isNumeric( strIdUser ) )
        {
            return AdminMessageService.getMessageUrl( request, Messages.MANDATORY_FIELDS, AdminMessage.TYPE_STOP );
        }

        // Check permissions
        if ( !_unitService.isAuthorized( strIdUnit, UnitResourceIdService.PERMISSION_REMOVE_USER, getUser( ), UnittreeRBACRecursiveType.PARENT_RECURSIVE ) )
        {
            return AdminMessageService.getMessageUrl( request, Messages.USER_ACCESS_DENIED, AdminMessage.TYPE_STOP );
        }

        populate( unit, request );

        try
        {
            UnitAttributeManager.populate( unit, request );
        }
        catch( UnitErrorException ue )
        {
            return AdminMessageService.getMessageUrl( request, ue.getI18nErrorMessage( ), AdminMessage.TYPE_STOP );
        }

        // Check mandatory fields
        Set<ConstraintViolation<Unit>> constraintViolations = BeanValidationUtil.validate( unit );

        if ( CollectionUtils.isNotEmpty( constraintViolations ) )
        {
            return AdminMessageService.getMessageUrl( request, Messages.MANDATORY_FIELDS, AdminMessage.TYPE_STOP );
        }

        Unit sameCodeUnit = _unitService.getUnitByCode( unit.getCode(), false );
        if ( sameCodeUnit != null )