Edit

                    if (state.getConfig().getDnaSoure() != null){

                        importAssociatedDna(state, item, derivedUnitFacade);

                    }

                                    if (associatedFieldUnit == null){

                                        state.getReport().addInfoMessage(

                                                String.format("%s has no field unit.", associatedUnit));

                                    }else if(associatedFieldUnits.size() > 1) {

    private void importAssociatedDna(Abcd206ImportState state, Object itemObject,

            DerivedUnitFacade derivedUnitFacade){

        URI dnaSource = state.getConfig().getDnaSoure();

        String unitId = derivedUnitFacade.getCatalogNumber();

        if (unitId == null) {

            unitId = derivedUnitFacade.getAccessionNumber();

        }

        UnitAssociationParser unitParser = new UnitAssociationParser(state.getPrefix(), state.getReport(),

                state.getCdmRepository());

        UnitAssociationWrapper unitAssociationWrapper = null;

        unitAssociationWrapper = unitParser.parseSiblings(unitId, dnaSource);

        DerivedUnit currentUnit = state.getDerivedUnitBase();

        // DerivationEvent currentDerivedFrom = currentUnit.getDerivedFrom();

        FieldUnit currentFieldUnit = derivedUnitFacade.getFieldUnit(false);

        if (unitAssociationWrapper != null) {

            NodeList associatedUnits = unitAssociationWrapper.getAssociatedUnits();

            if (associatedUnits != null) {

                for (int m = 0; m < associatedUnits.getLength(); m++) {

                    if (associatedUnits.item(m) instanceof Element) {

                        state.reset();

                        String associationType = AbcdParseUtility

                                .parseFirstTextContent(((Element) associatedUnits.item(m))

                                        .getElementsByTagName(state.getPrefix() + "AssociationType"));

                        Abcd206ImportParser.setUnitPropertiesXML((Element) associatedUnits.item(m),

                                new Abcd206XMLFieldGetter(state.getDataHolder(), unitAssociationWrapper.getPrefix()),

                                state);

                        // logger.debug("derived unit: " +

                        // state.getDerivedUnitBase().toString() + " associated

                        // unit: " +state.getDataHolder().getKindOfUnit() + ", "

                        // + state.getDataHolder().accessionNumber + ", " +

                        // state.getDataHolder().getRecordBasis() + ", " +

                        // state.getDataHolder().getUnitID());

                        handleSingleUnit(state, associatedUnits.item(m), false);

                        DerivedUnit associatedUnit = state.getDerivedUnitBase();

                        FieldUnit associatedFieldUnit = null;

                        java.util.Collection<FieldUnit> associatedFieldUnits = state.getCdmRepository()

                                .getOccurrenceService().findFieldUnits(associatedUnit.getUuid(), null);

                        // ignore field unit if associated unit has more than

                        // one

                        if (associatedFieldUnits.size() > 1) {

                            state.getReport()

                                    .addInfoMessage(String.format("%s has more than one field unit.", associatedUnit));

                        } else if (associatedFieldUnits.size() == 1) {

                            associatedFieldUnit = associatedFieldUnits.iterator().next();

                        }

                        // parent-child relation:

                        if (associationType.contains("individual") || associationType.contains("culture")

                                || associationType.contains("sample") ||  associationType.contains("isolated")) {

                            DerivationEvent updatedDerivationEvent = DerivationEvent.NewSimpleInstance(currentUnit,

                                    associatedUnit, DerivationEventType.ACCESSIONING());

                            updatedDerivationEvent.setDescription(associationType);

                            if (associatedFieldUnit != null && associatedFieldUnit != currentFieldUnit) {

                                associatedFieldUnit.removeDerivationEvent(updatedDerivationEvent);

                                state.getCdmRepository().getOccurrenceService().delete(associatedFieldUnit);

                            }

                            state.getReport().addDerivate(associatedUnit, currentUnit, state.getConfig());

                        }

                        save(associatedUnit, state);

                    }

                }

            }

        }

        state.reset();

        state.setDerivedUnitBase(currentUnit);

    }

    private URI dnaSoure = URI.create("https://ww3.bgbm.org/biocase/pywrapper.cgi?dsa=DNA_Bank");

    public URI getDnaSoure() {

        return dnaSoure;

    }

    public void setDnaSoure(URI dnaSoure) {

        this.dnaSoure = dnaSoure;

    }