private MAttributeSetInstance saveSelection0() {
    log.info("");

    final MAttributeSet as = asiTemplate.getMAttributeSet();
    Check.assumeNotNull(as, "as not null");

    // Create a new ASI which is copying the existing one
    final MAttributeSetInstance asi =
        new MAttributeSetInstance(getCtx(), 0, ITrx.TRXNAME_ThreadInherited);
    InterfaceWrapperHelper.copyValues(
        asiTemplate, asi, false); // honorIsCalculated=false => copy everything
    asi.setM_AttributeSet(as); // make sure we have the right AttributeSet model set

    //
    boolean changed = false;
    final Set<String> mandatory = new LinkedHashSet<>();

    // Lot
    if (!m_productWindow && as.isLot()) {
      String text = fieldLotString.getText();
      asi.setLot(text);
      if (as.isLotMandatory() && (text == null || text.length() == 0)) {
        mandatory.add(msgBL.translate(getCtx(), "Lot"));
      }
      changed = true;
    } // Lot

    // Serial No
    if (!m_productWindow && as.isSerNo()) {
      final String serNo = fieldSerNo.getText();
      asi.setSerNo(serNo);
      if (as.isSerNoMandatory() && Check.isEmpty(serNo, true)) {
        mandatory.add(msgBL.translate(getCtx(), "SerNo"));
      }
      changed = true;
    } // SerNo

    //
    // Guarantee Date (if required)
    if (fieldGuaranteeDateDisplayed) {
      final Timestamp guaranteeDate = fieldGuaranteeDate.getValue();
      asi.setGuaranteeDate(guaranteeDate);
      if (as.isGuaranteeDate() && as.isGuaranteeDateMandatory() && guaranteeDate == null) {
        mandatory.add(msgBL.translate(getCtx(), I_M_AttributeSetInstance.COLUMNNAME_GuaranteeDate));
      }
      changed = true;
    }

    //
    // New Instance
    if (changed || asi.getM_AttributeSetInstance_ID() <= 0) {
      InterfaceWrapperHelper.save(asi);
      changed = true;
    }
    final int attributeSetInstanceId = asi.getM_AttributeSetInstance_ID();

    //
    // Save Instance Attributes
    for (final MAttribute attribute : m_attributes) {
      final CEditor editor = attributeId2editor.get(attribute.getM_Attribute_ID());

      if (MAttribute.ATTRIBUTEVALUETYPE_List.equals(attribute.getAttributeValueType())) {
        @SuppressWarnings("unchecked")
        final CComboBox<I_M_AttributeValue> editorCombo = (CComboBox<I_M_AttributeValue>) editor;
        final I_M_AttributeValue attributeValue = editorCombo.getSelectedItem();
        if (attribute.isMandatory() && attributeValue == null) {
          mandatory.add(attribute.getName());
        }
        attribute.setMAttributeInstance(attributeSetInstanceId, attributeValue);
      } else if (MAttribute.ATTRIBUTEVALUETYPE_Number.equals(attribute.getAttributeValueType())) {
        final VNumber editorNumber = (VNumber) editor;
        final BigDecimal value = (BigDecimal) editorNumber.getValue();
        if (attribute.isMandatory() && value == null) {
          mandatory.add(attribute.getName());
        }
        attribute.setMAttributeInstance(attributeSetInstanceId, value);
      } else if (MAttribute.ATTRIBUTEVALUETYPE_Date.equals(attribute.getAttributeValueType())) {
        final VDate editorDate = (VDate) editor;
        final Timestamp value = editorDate.getValue();
        if (attribute.isMandatory() && value == null) {
          mandatory.add(attribute.getName());
        }
        attribute.setMAttributeInstance(attributeSetInstanceId, value);
      } else {
        final VString editorString = (VString) editor;
        final String value = editorString.getText();
        if (attribute.isMandatory() && Check.isEmpty(value, false)) {
          mandatory.add(attribute.getName());
        }
        attribute.setMAttributeInstance(attributeSetInstanceId, value);
      }
      changed = true;
    } // for all attributes

    //
    // Throw exception if there are some mandatory fields which were not set
    if (!mandatory.isEmpty()) {
      throw new AdempiereException("@FillMandatory@ " + StringUtils.toString(mandatory, ", "));
    }

    // Save Model
    if (changed) {
      asi.setMAttributeSet(as); // NOTE: this is workaround for the case when M_AttributeSet_ID=0
      attributeSetInstanceBL.setDescription(asi);
      InterfaceWrapperHelper.save(asi);
    }

    return asi;
  }
  /**
   * Add Attribute Line
   *
   * @param attribute attribute
   * @param product product level attribute
   * @param readOnly value is read only
   */
  private void addAttributeLine(final MAttribute attribute) {
    final boolean product = m_productWindow;
    final boolean readOnly = false;

    log.fine(attribute + ", Product=" + product + ", R/O=" + readOnly);
    CLabel label = new CLabel(attribute.getName());
    if (product) {
      label.setFont(new Font(label.getFont().getFontName(), Font.BOLD, label.getFont().getSize()));
    }
    if (attribute.getDescription() != null) {
      label.setToolTipText(attribute.getDescription());
    }

    centerPanel.add(label, new ALayoutConstraint(m_row++, 0));
    //
    final int attributeSetInstanceId = asiTemplate.getM_AttributeSetInstance_ID();
    final int attributeId = attribute.getM_Attribute_ID();
    final MAttributeInstance instance = attribute.getMAttributeInstance(attributeSetInstanceId);
    if (MAttribute.ATTRIBUTEVALUETYPE_List.equals(attribute.getAttributeValueType())) {
      InterfaceWrapperHelper.setDynAttribute(
          attribute, Env.DYNATTR_WindowNo, attributeContext.getWindowNo());
      InterfaceWrapperHelper.setDynAttribute(
          attribute, Env.DYNATTR_TabNo, attributeContext.getTabNo()); // tabNo

      final I_M_AttributeValue[] values =
          attribute.getMAttributeValues(getSOTrx()); // optional = null
      final CComboBox<I_M_AttributeValue> editor = new CComboBox<>(values);
      boolean found = false;
      if (instance != null && instance.getM_AttributeValue_ID() > 0) {
        for (int i = 0; i < values.length; i++) {
          if (values[i] != null
              && values[i].getM_AttributeValue_ID() == instance.getM_AttributeValue_ID()) {
            editor.setSelectedIndex(i);
            found = true;
            break;
          }
        }
        if (found)
          log.fine(
              "Attribute=" + attribute.getName() + " #" + values.length + " - found: " + instance);
        else
          log.warning(
              "Attribute="
                  + attribute.getName()
                  + " #"
                  + values.length
                  + " - NOT found: "
                  + instance);
      } // setComboBox
      else {
        log.fine("Attribute=" + attribute.getName() + " #" + values.length + " no instance");
      }
      label.setLabelFor(editor);
      centerPanel.add(editor, null);
      if (readOnly) editor.setEnabled(false);
      else attributeId2editor.put(attributeId, editor);
    } else if (MAttribute.ATTRIBUTEVALUETYPE_Number.equals(attribute.getAttributeValueType())) {
      final VNumber editor =
          new VNumber(
              attribute.getName(), // ColumnName
              attribute.isMandatory(), // mandatory
              false, // IsReadOnly
              true, // IsUpdateable
              DisplayType.Number, // DisplayType
              attribute.getName() // Title
              );
      if (instance != null) {
        if (InterfaceWrapperHelper.isNull(instance, I_M_AttributeInstance.COLUMNNAME_ValueNumber)) {
          editor.setValue(null);
        } else {
          editor.setValue(instance.getValueNumber());
        }
      } else {
        // better don't set a default value
        // editor.setValue(Env.ZERO);
      }
      label.setLabelFor(editor);
      centerPanel.add(editor, null);
      if (readOnly) editor.setEnabled(false);
      else attributeId2editor.put(attributeId, editor);
    } else if (MAttribute.ATTRIBUTEVALUETYPE_Date.equals(attribute.getAttributeValueType())) {
      final VDate editor =
          new VDate(
              attribute.getName(), // columnName
              attribute.isMandatory(), // mandatory
              false, // isReadOnly
              true, // isUpdateable
              DisplayType.Date, // displayType
              attribute.getName() // title
              );
      if (instance != null) editor.setValue(instance.getValueDate());
      label.setLabelFor(editor);
      centerPanel.add(editor, null);
      if (readOnly) editor.setEnabled(false);
      else attributeId2editor.put(attributeId, editor);
    } else
    // Text Field
    {
      VString editor =
          new VString(
              attribute.getName(), // ColumnName
              attribute.isMandatory(), // mandatory
              false, // isReadOnly
              true, // isUpdateable
              20, // displayLength
              INSTANCE_VALUE_LENGTH, // fieldLength
              null, // VFormat
              null // ObscureType
              );
      if (instance != null) editor.setText(instance.getValue());
      label.setLabelFor(editor);
      centerPanel.add(editor, null);
      if (readOnly) editor.setEnabled(false);
      else attributeId2editor.put(attributeId, editor);
    }

    //
    // Add our attribute to the list of attributes
    m_attributes.add(attribute);
  } // addAttributeLine