diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/xslt/XSLTTransformationFunction.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/xslt/XSLTTransformationFunction.java
index 54192a7be..247915d17 100644
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/xslt/XSLTTransformationFunction.java
+++ b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/transformation/xslt/XSLTTransformationFunction.java
@@ -48,7 +48,7 @@ public class XSLTTransformationFunction implements MapFunction<MetadataRecord, M
 	@Override
 	public MetadataRecord call(MetadataRecord value) {
 		aggregationCounter.getTotalItems().add(1);
-		try {
+
 			Processor processor = new Processor(false);
 
 			processor.registerExtensionFunction(cleanFunction);
@@ -60,11 +60,18 @@ public class XSLTTransformationFunction implements MapFunction<MetadataRecord, M
 			comp.setParameter(datasourceIDParam, new XdmAtomicValue(value.getProvenance().getDatasourceId()));
 			QName datasourceNameParam = new QName(DATASOURCE_NAME_PARAM);
 			comp.setParameter(datasourceNameParam, new XdmAtomicValue(value.getProvenance().getDatasourceName()));
-			XsltExecutable xslt = comp
-				.compile(new StreamSource(IOUtils.toInputStream(transformationRule, StandardCharsets.UTF_8)));
-			XdmNode source = processor
-				.newDocumentBuilder()
-				.build(new StreamSource(IOUtils.toInputStream(value.getBody(), StandardCharsets.UTF_8)));
+		    XsltExecutable xslt;
+			XdmNode source;
+			try {
+				xslt = comp
+						.compile(new StreamSource(IOUtils.toInputStream(transformationRule, StandardCharsets.UTF_8)));
+				source = processor
+						.newDocumentBuilder()
+						.build(new StreamSource(IOUtils.toInputStream(value.getBody(), StandardCharsets.UTF_8)));
+			} catch (Throwable e) {
+				throw new RuntimeException("Error on parsing xslt", e);
+			}
+			try {
 			XsltTransformer trans = xslt.load();
 			trans.setInitialContextNode(source);
 			final StringWriter output = new StringWriter();
diff --git a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/TransformationJobTest.java b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/TransformationJobTest.java
index 7fc80d168..16a90ec70 100644
--- a/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/TransformationJobTest.java
+++ b/dhp-workflows/dhp-aggregation/src/test/java/eu/dnetlib/dhp/transformation/TransformationJobTest.java
@@ -3,6 +3,7 @@ package eu.dnetlib.dhp.transformation;
 
 import static eu.dnetlib.dhp.common.Constants.MDSTORE_DATA_PATH;
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import java.io.IOException;
 import java.nio.file.Path;
@@ -279,6 +280,19 @@ class TransformationJobTest extends AbstractVocabularyTest {
 		// TODO Create significant Assert
 	}
 
+	@Test
+	public void testInvalidXSLT() throws Exception{
+		final MetadataRecord mr = new MetadataRecord();
+
+		mr.setProvenance(new Provenance("openaire____::cnr_explora", "CNR ExploRA", "cnr_________"));
+		mr.setBody(IOUtils.toString(getClass().getResourceAsStream("/eu/dnetlib/dhp/transform/input_cnr_explora.xml")));
+		// We Load the XSLT transformation Rule from the classpath
+		final XSLTTransformationFunction tr = loadTransformationRule("/eu/dnetlib/dhp/transform/invalid.xslt");
+
+		assertThrows(RuntimeException.class,()->tr.call(mr));
+
+	}
+
 	private XSLTTransformationFunction loadTransformationRule(final String path) throws Exception {
 		final String trValue = IOUtils.toString(this.getClass().getResourceAsStream(path));
 		final LongAccumulator la = new LongAccumulator();
diff --git a/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/transform/invalid.xslt b/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/transform/invalid.xslt
new file mode 100644
index 000000000..3c84e08e7
--- /dev/null
+++ b/dhp-workflows/dhp-aggregation/src/test/resources/eu/dnetlib/dhp/transform/invalid.xslt
@@ -0,0 +1,185 @@
+<xsl:stylesheet
+	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+	xmlns:oaire="http://namespace.openaire.eu/schema/oaire/"
+	xmlns:vocabulary="http://eu/dnetlib/transform/clean"
+	xmlns:dateCleaner="http://eu/dnetlib/transform/dateISO"
+	xmlns:oaf="http://namespace.openaire.eu/oaf"
+	xmlns:oai="http://www.openarchives.org/OAI/2.0/"
+	xmlns:datacite="http://datacite.org/schema/kernel-4"
+	xmlns:dri="http://www.driver-repository.eu/namespace/dri"
+	xmlns:xs="http://www.w3.org/2001/XMLSchema"
+	xmlns:dr="http://www.driver-repository.eu/namespace/dr"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns:dc="http://purl.org/dc/elements/1.1/"
+	exclude-result-prefixes="xsl vocabulary dateCleaner" version="2.0">
+	<xsl:param name="varOfficialName" />
+	<xsl:param name="varDataSourceId" />
+	<xsl:param name="varFP7" select="'corda_______::'" />
+	<xsl:param name="varH2020" select="'corda__h2020::'" />
+	<xsl:param name="repoCode"
+		select="substring-before(//*[local-name() = 'header']/*[local-name()='recordIdentifier'], ':')" />
+	<xsl:param name="index" select="0" />
+	<xsl:param name="transDate" select="current-dateTime()" />
+asdf;klamsdof'sdn &
+	<xsl:template match="/asdfasdf asdf&">
+		c:format'" />
+				</xsl:call-template>
+				<xsl:call-template name="allElements">
+					<xsl:with-param name="sourceElement" select="//dc:type" />
+					<xsl:with-param name="targetElement" select="'dc:type'" />
+				</xsl:call-template>
+				<xsl:call-template name="allElements">
+					<xsl:with-param name="sourceElement" select="//dc:source" />
+					<xsl:with-param name="targetElement" select="'dc:source'" />
+				</xsl:call-template>
+				<dc:language>
+					<xsl:value-of select="vocabulary:clean( //dc:language, 'dnet:languages')" />
+				</dc:language>
+				<xsl:call-template name="allElements">
+					<xsl:with-param name="sourceElement" select="//dc:rights" />
+					<xsl:with-param name="targetElement" select="'dc:rights'" />
+				</xsl:call-template>
+				<xsl:call-template name="allElements">
+					<xsl:with-param name="sourceElement" select="//dc:relation[not(starts-with(.,'info:cnr-pdr'))]" />
+					<xsl:with-param name="targetElement" select="'dc:relation'" />
+				</xsl:call-template>
+				
+				<xsl:call-template name="allElements">
+					<xsl:with-param name="sourceElement" select="//dc:identifier[starts-with(., 'http')]" />
+					<xsl:with-param name="targetElement" select="'dc:identifier'" />
+				</xsl:call-template>
+				<xsl:for-each select="//dc:relation">
+					<xsl:if	test="matches(normalize-space(.), '(info:eu-repo/grantagreement/ec/fp7/)(\d\d\d\d\d\d)(.*)', 'i')">
+						<oaf:projectid>
+							<xsl:value-of select="concat($varFP7, replace(normalize-space(.), '(info:eu-repo/grantagreement/ec/fp7/)(\d\d\d\d\d\d)(.*)', '$2', 'i'))" />
+						</oaf:projectid>
+					</xsl:if>
+					<xsl:if test="matches(normalize-space(.), '(info:eu-repo/grantagreement/ec/h2020/)(\d\d\d\d\d\d)(.*)', 'i')">
+						<oaf:projectid>
+							<xsl:value-of select="concat($varH2020, replace(normalize-space(.), '(info:eu-repo/grantagreement/ec/h2020/)(\d\d\d\d\d\d)(.*)', '$2', 'i'))" />
+						</oaf:projectid>
+					</xsl:if>
+				</xsl:for-each>
+				
+				<oaf:accessrights>
+					<xsl:value-of select="vocabulary:clean( //dc:rights, 'dnet:access_modes')" />
+				</oaf:accessrights>
+				
+				<xsl:variable name="varCobjCategory" select="vocabulary:clean( //dc:type, 'dnet:publication_resource')" />
+				<xsl:variable name="varSuperType" select="vocabulary:clean( $varCobjCategory, 'dnet:result_typologies')" />				
+				<dr:CobjCategory type="{$varSuperType}"><xsl:value-of select="$varCobjCategory" /></dr:CobjCategory>
+				
+				
+				<xsl:variable name="varRefereedConvt" select="for $i in (//dc:type, //dc:description, //oai:setSpec) return vocabulary:clean( normalize-space($i), 'dnet:review_levels')" />
+				<xsl:variable name="varRefereedIdntf" select="(//*[string(node-name(.)) = 'dc:identifier' and matches(lower-case(.), '(^|.*[\.\-_/\s\(\)%\d#])pre[\.\-_/\s\(\)%\d#]?prints?([\.\-_/\s\(\)%\d#].*)?$')][count(//dc:identifier) = 1]/'0002', //*[string(node-name(.)) = 'dc:identifier' and matches(lower-case(.), '(^|.*[\.\-_/\s\(\)%\d#])refereed([\.\-_/\s\(\)\d%\d#].*)?$')]/'0001', //*[string(node-name(.)) = 'dc:identifier' and matches(lower-case(.), '.*-peer-reviewed-(fulltext-)?article-.*')]/'0001')" />
+				<xsl:variable name="varRefereedSourc" select="//*[string(node-name(.)) = ('dc:source', 'dc:publisher') and matches(lower-case(.), '^(.*\s)?pre[\s\-_]*prints?([\s\.,].*)?$')]/'0002'" />
+				<xsl:variable name="varRefereedDescr" select="(//dc:description[matches(lower-case(.), '.*(this\s*book|this\s*volume|it)\s*constitutes\s*the\s*(thoroughly\s*)?refereed') or matches(lower-case(.), '.*peer[\.\-_/\s\(\)]?review\s*under\s*responsibility\s*of.*') or matches(lower-case(.), '(this|a)\s*(article|preprint)\s*(has\s*been\s*)?(peer[\-\s]*)?reviewed\s*and\s*recommended\s*by\s*peer[\-\s]*community')]/'0001', //dc:description[matches(., '^version\s*(préliminaire.*|preliminary.*|0$)')]/'0002')" />
+				<xsl:variable name="varRefereedTitle" select="(//dc:title[matches(lower-case(.), '.*\[.*peer[\s\-\._]*review\s*:.*\]\s*$')]/'0001', //dc:title[matches(lower-case(.), '.*\(\s*pre[\s\-\._]*prints?\s*\)\s*$')]/'0002')" />
+				<xsl:variable name="varRefereedSubjt" select="(//dc:subject[matches(lower-case(.), '^\s*refereed\s*$')][//oaf:datasourceprefix = 'narcis______']/'0001', //dc:subject[matches(lower-case(.), '^\s*no[nt].{0,3}refereed\s*$')][//oaf:datasourceprefix = 'narcis______']/'0002')" />
+				<xsl:variable name="varRefereed" select="($varRefereedConvt, $varRefereedIdntf, $varRefereedSourc, $varRefereedDescr, $varRefereedTitle, $varRefereedSubjt)" />
+				<xsl:choose>
+					<xsl:when test="count($varRefereed[. = '0001']) &gt; 0">
+						<oaf:refereed>
+							<xsl:value-of select="'0001'" />
+						</oaf:refereed>
+					</xsl:when>
+					<xsl:when test="count($varRefereed[. = '0002']) &gt; 0">
+						<oaf:refereed>
+							<xsl:value-of select="'0002'" />
+						</oaf:refereed>
+					</xsl:when>
+				</xsl:choose>
+				
+				<oaf:dateAccepted>
+					<xsl:value-of select="dateCleaner:dateISO( //dc:date[1] )" />
+				</oaf:dateAccepted>
+				
+				<xsl:if test="//dc:relation[starts-with(., 'http')] and //dc:rights[.='info:eu-repo/semantics/openAccess']">
+					<oaf:fulltext>
+						<xsl:value-of select="//dc:relation[starts-with(., 'http')]" />
+					</oaf:fulltext>
+				</xsl:if>
+				
+				<oaf:hostedBy name="{$varOfficialName}" id="{$varDataSourceId}" />
+				<oaf:collectedFrom name="{$varOfficialName}" id="{$varDataSourceId}" />
+
+				<xsl:variable name="varKnownFileEndings" select="('.bmp', '.doc', '.docx', '.epub', '.flv', '.jpeg', '.jpg', '.m4v', '.mp4', '.mpg', '.odp', '.pdf', '.png', '.ppt', '.tiv', '.txt', '.xls', '.xlsx', '.zip')" />
+				<xsl:variable name="varIdDoi" select="distinct-values((//dc:identifier[starts-with(., '10.')][matches(., '(10[.][0-9]{4,}[^\s/&gt;]*/[^\s&gt;]+)')], //dc:identifier[starts-with(., 'http') and (contains(., '://dx.doi.org/10.') or contains(., '://doi.org/10.'))]/substring-after(., 'doi.org/'), //dc:identifier[starts-with(lower-case(.), 'doi:10.')]/substring-after(lower-case(.), 'doi:')))" />
+				<xsl:for-each select="$varIdDoi">
+					<oaf:identifier identifierType="doi">
+						<xsl:value-of select="." />
+					</oaf:identifier>
+				</xsl:for-each>
+				
+				<xsl:variable name="varIdHdl" select="distinct-values(//dc:identifier[starts-with(., 'http') and contains(., '://hdl.handle.net/')]/substring-after(., 'hdl.handle.net/'))" />
+				<xsl:for-each select="$varIdHdl" >
+					<oaf:identifier identifierType="handle">
+						<xsl:value-of select="." />
+					</oaf:identifier>
+				</xsl:for-each>
+				
+				<xsl:variable name="varIdUrn" select="distinct-values(//dc:identifier[starts-with(., 'urn:nbn:nl:') or starts-with(., 'URN:NBN:NL:')])" />
+				<xsl:for-each select="$varIdUrn">
+					<oaf:identifier identifierType="urn">
+						<xsl:value-of select="." />
+					</oaf:identifier>
+				</xsl:for-each>
+				
+				<xsl:variable name="varOrigBaseUrl" select="//*[local-name() = 'about']/*[local-name() = 'provenance']//*[local-name() = 'originDescription' and not(./*[local-name() = 'originDescription'])]/*[local-name() = 'baseURL']" />
+				<xsl:variable name="varIdLdpg" select="distinct-values(//dc:identifier[(contains(substring-after(., '://'), '/') and contains($varOrigBaseUrl, substring-before(substring-after(., '://'), '/'))) or (contains(substring-after(., '://'), ':') and contains($varOrigBaseUrl, substring-before(substring-after(., '://'), ':')))][not(replace(lower-case(.), '.*(\.[a-z]*)$', '$1') = $varKnownFileEndings)])" />
+				<xsl:for-each select="$varIdLdpg">
+					<oaf:identifier identifierType="landingPage">
+						<xsl:value-of select="." />
+					</oaf:identifier>
+				</xsl:for-each>
+				
+				<xsl:variable name="varIdUrl" select="distinct-values(//dc:identifier[starts-with(., 'http')][not(contains(., '://dx.doi.org/') or contains(., '://doi.org/') or contains(., '://hdl.handle.net/'))][count(index-of($varIdLdpg, .)) = 0])" />
+				<xsl:for-each select="$varIdUrl">
+					<oaf:identifier identifierType="url">
+						<xsl:value-of select="." />
+					</oaf:identifier>
+				</xsl:for-each>
+				
+				<xsl:for-each select="//oai:setSpec">
+					<xsl:variable name="rorDsId" select="vocabulary:clean(., 'cnr:institutes')" />
+					<xsl:if test="contains($rorDsId, '/ror.org/')">
+						<oaf:relation relType="resultOrganization" subRelType="affiliation" relClass="hasAuthorInstitution">
+							<xsl:value-of select="concat('ror_________::', $rorDsId)" />
+						</oaf:relation>
+					</xsl:if>
+				</xsl:for-each>
+				
+			</metadata>
+			
+			<xsl:copy-of select="//*[local-name() = 'about']" />
+		</record>
+	</xsl:template>
+	
+	
+	<xsl:template name="allElements">
+		<xsl:param name="sourceElement" />
+		<xsl:param name="targetElement" />
+	
+		<xsl:for-each select="$sourceElement">
+			<xsl:element name="{$targetElement}">
+				<xsl:value-of select="normalize-space(.)" />
+			</xsl:element>
+		</xsl:for-each>
+	</xsl:template>
+	
+	<xsl:template match="//*[local-name() = 'header']">
+		<xsl:copy>
+			<xsl:apply-templates select="node()|@*" />
+			<xsl:element name="dr:dateOfTransformation">
+				<xsl:value-of select="$transDate" />
+			</xsl:element>
+		</xsl:copy>
+	</xsl:template>
+	
+	<xsl:template match="node()|@*">
+		<xsl:copy>
+			<xsl:apply-templates select="node()|@*" />
+		</xsl:copy>
+	</xsl:template>
+	
+</xsl:stylesheet>
\ No newline at end of file