diff --git a/mir-module/src/main/resources/config/mir/messages_de.properties b/mir-module/src/main/resources/config/mir/messages_de.properties
index a436cd420c..807115a7c0 100644
--- a/mir-module/src/main/resources/config/mir/messages_de.properties
+++ b/mir-module/src/main/resources/config/mir/messages_de.properties
@@ -917,4 +917,18 @@ subselect.category.title  = Kategorie ausw\u00E4hlen
 
 user.profile.id.orcid = Ihre ORCID iD
 selfRegistration.error.mailExists = Die E-Mail-Adresse wird bereits verwendet.
+pdf.errorbox.warning.message=Achtung! Bei einigen Ihrer PDF/A Dokumente sind Fehler aufgetreten. Bitte stellen Sie sicher, dass ihre PDF/A Dokumente mit aktuellen und geeigneten Programmen erstellt wurden und lesen Sie die Fehlerdokumentation. Anbei finden Sie eine Liste der aufgetretenen Fehler!
+pdf.errorbox.warning.heading=Warnung!
+pdf.errorbox.success.heading=Erfolg!
+pdf.errorbox.success.message=Ihre PDF Dokumente wurden \u00FCberpr\u00FCft und es wurden keine Fehler gefunden.
+pdf.errorbox.button.info=Mehr Informationen
+pdf.errorbox.button.download=Herunterladen
+pdf.errorbox.conformity.level=Konformit\u00E4tstufe
+pdf.errorbox.unknown.error=Keine weiteren Informationen!
+pdf.errorbox.clause=Paragraph
+pdf.errorbox.test=Test
+pdf.errorbox.no.conformity=Keine
+pdf.errorbox.specification=Spezifikation
+pdf.errorbox.validationerror.message=Leider konnte dieses Dokument aufgrund eines Fehlers nicht validiert werden.
+pdf.error.runtimeerror.message=W\u00E4hrend des Lese- oder Validierungsprozesses trat zur Laufzeit ein Fehler auf.
 mir.derivate.file.MD5 = MD5 Summe:
diff --git a/mir-module/src/main/resources/config/mir/messages_en.properties b/mir-module/src/main/resources/config/mir/messages_en.properties
index 0f0027e9e9..d173ecff98 100644
--- a/mir-module/src/main/resources/config/mir/messages_en.properties
+++ b/mir-module/src/main/resources/config/mir/messages_en.properties
@@ -870,4 +870,18 @@ subselect.category.cancel = Cancel
 subselect.category.title  = Choose category
 
 user.profile.id.orcid = Your ORCID iD
+pdf.errorbox.warning.message=Attention! Errors have occurred with some of your PDF/A documents. Please make sure that your PDF/A documents were created with up-to-date and suitable programs and read the error documentation. You will find a list of the occurred errors below!
+pdf.errorbox.warning.heading=Warning!
+pdf.errorbox.success.heading=Success!
+pdf.errorbox.success.message=Your PDF documents were verified and no errors were found.
+pdf.errorbox.button.info=Learn More
+pdf.errorbox.button.download=Download
+pdf.errorbox.conformity.level=Conformity level
+pdf.errorbox.unknown.error=No further information!
+pdf.errorbox.clause=Clause
+pdf.errorbox.test=Test
+pdf.errorbox.no.conformity=None
+pdf.errorbox.specification=Specification
+pdf.errorbox.validationerror.message=Unfortunately, this document could not be validated due to an error.
+pdf.error.runtimeerror.message=An error occurred during the read or validation process at runtime.
 
diff --git a/mir-module/src/main/resources/config/mir/mycore.properties b/mir-module/src/main/resources/config/mir/mycore.properties
index f12ab5d90e..fd53a87de8 100644
--- a/mir-module/src/main/resources/config/mir/mycore.properties
+++ b/mir-module/src/main/resources/config/mir/mycore.properties
@@ -736,7 +736,7 @@ MCR.Object.Static.Content.Generator.mir-history.Transformer=mir-history
 MCR.URIResolver.xslImports.mirworkflow=metadata/mir-workflow.xsl
 MIR.Workflow.Menu=false
 MIR.Workflow.Box=false
-
+MIR.Workflow.PDFValidation=false
 ##############################################################################
 # new Metadata Layout                                                        #
 ##############################################################################
diff --git a/mir-module/src/main/resources/xsl/metadata/mir-pdf-errorbox.xsl b/mir-module/src/main/resources/xsl/metadata/mir-pdf-errorbox.xsl
new file mode 100644
index 0000000000..f785ff3c3e
--- /dev/null
+++ b/mir-module/src/main/resources/xsl/metadata/mir-pdf-errorbox.xsl
@@ -0,0 +1,368 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+                xmlns:i18n="xalan://org.mycore.services.i18n.MCRTranslation"
+                xmlns:xlink="http://www.w3.org/1999/xlink"
+                xmlns:mcrxsl="xalan://org.mycore.common.xml.MCRXMLFunctions"
+                xmlns:xalan="http://xml.apache.org/xalan"
+                version="1.0" exclude-result-prefixes="i18n mcrxsl">
+
+    <xsl:param name="ServletsBaseURL"/>
+
+
+    <xsl:template match="mycoreobject" mode="displayPdfError">
+        <xsl:variable name="errorMessages">
+            <xsl:apply-templates select="structure/derobjects/derobject" mode="displayPdfError"/>
+        </xsl:variable>
+        <xsl:if test="string-length(normalize-space($errorMessages)) >0">
+            <xsl:variable name="couldNotBeValidated">
+                <xsl:choose>
+                    <xsl:when test="contains($errorMessages,i18n:translate('pdf.errorbox.validationerror.message'))">
+                        <xsl:value-of select="'true'"/>
+                    </xsl:when>
+                    <xsl:otherwise>
+                        <xsl:value-of select="'false'"/>
+                    </xsl:otherwise>
+                </xsl:choose>
+            </xsl:variable>
+            <xsl:variable name="containsValidationError">
+                <xsl:choose>
+                    <xsl:when test="contains($errorMessages,i18n:translate('pdf.errorbox.clause'))">
+                        <xsl:value-of select="'true'"/>
+                    </xsl:when>
+                    <xsl:otherwise>
+                        <xsl:value-of select="'false'"/>
+                    </xsl:otherwise>
+                </xsl:choose>
+            </xsl:variable>
+            <xsl:variable name="CaughtException">
+                <xsl:choose>
+                    <xsl:when test="contains($errorMessages,i18n:translate('pdf.error.runtimeerror.message'))">
+                        <xsl:value-of select="'true'"/>
+                    </xsl:when>
+                    <xsl:otherwise>
+                        <xsl:value-of select="'false'"/>
+                    </xsl:otherwise>
+                </xsl:choose>
+            </xsl:variable>
+            <xsl:variable name="validationWasSuccessfull">
+                <xsl:choose>
+                    <xsl:when test="$couldNotBeValidated='false' and $containsValidationError='false' and $CaughtException='false'">
+                        <xsl:value-of select="'true'"/>
+                    </xsl:when>
+                    <xsl:otherwise>
+                        <xsl:value-of select="'false'"/>
+                    </xsl:otherwise>
+                </xsl:choose>
+            </xsl:variable>
+
+            <xsl:choose>
+                <xsl:when test="$validationWasSuccessfull='false' and $CaughtException='false'">
+                    <div class="container pdf-validation mb-3 px-0" id="accordion">
+                        <div class="card-header bg-danger text-white">
+                            <div class="list-group list-group-root well p-3">
+                                <p class="h5">
+                                    <xsl:value-of select="i18n:translate('pdf.errorbox.warning.heading')"/>
+                                </p>
+                                <p>
+                                    <xsl:value-of select="i18n:translate('pdf.errorbox.warning.message')"/>
+                                </p>
+                            </div>
+                        </div>
+                        <div class="card-body border-left border-right border-bottom">
+                            <xsl:copy-of select="$errorMessages"/>
+                        </div>
+                    </div>
+                </xsl:when>
+                <xsl:when test="$validationWasSuccessfull='true'">
+                    <div class="card-header bg-success text-white mb-3">
+                        <div class="list-group list-group-root well p-3">
+                            <p class="h5">
+                                <xsl:value-of select="i18n:translate('pdf.errorbox.success.heading')"/>
+                            </p>
+                            <p>
+                                <xsl:value-of select="i18n:translate('pdf.errorbox.success.message')"/>
+                            </p>
+                        </div>
+                    </div>
+                </xsl:when>
+                <xsl:otherwise> <xsl:copy-of select="$errorMessages"/></xsl:otherwise>
+            </xsl:choose>
+        </xsl:if>
+    </xsl:template>
+
+    <xsl:template match="structure/derobjects/derobject" mode="displayPdfError">
+        <xsl:variable name="derivateID" select="@xlink:href"/>
+        <xsl:variable name="result" select="document(concat('catchEx:pdfAValidator:', $derivateID))"/>
+            <xsl:choose>
+            <xsl:when test="not(normalize-space($result))">
+                <xsl:apply-templates select="$result/derivate/file" mode="displayPdfError"/>
+            </xsl:when>
+            <xsl:otherwise>
+                <div class="card text-white bg-danger mb-3 pdfa-runtime-exception">
+                    <div class="card-header">
+                        <xsl:value-of select="concat($derivateID,': ',$result)"/>
+                    </div>
+                    <div class="card-body">
+                        <p class="card-text">
+                            <xsl:value-of select="i18n:translate('pdf.error.runtimeerror.message')"/>
+                        </p>
+                        <p class="card-text font-italic">
+                            <xsl:value-of select="i18n:translate('mir.error.finalLine')"/>
+                        </p>
+                    </div>
+                </div>
+
+            </xsl:otherwise>
+            </xsl:choose>
+    </xsl:template>
+
+
+
+    <xsl:template match="file" mode="displayPdfError">
+        <xsl:variable name="ValidationError" select="@flavour = 'Validation Error'"/>
+
+        <xsl:variable name="derivate" select="../@id"/>
+        <xsl:variable name="name">
+            <xsl:call-template name="pdfError.getFilename">
+                <xsl:with-param name="filePath" select="@name"/>
+            </xsl:call-template>
+        </xsl:variable>
+
+        <xsl:variable name="badgecolor">
+            <xsl:choose>
+                <xsl:when test="$ValidationError">warning</xsl:when>
+                <xsl:when test="failed">danger</xsl:when>
+                <xsl:otherwise>success</xsl:otherwise>
+            </xsl:choose>
+        </xsl:variable>
+
+        <xsl:variable name="uniqueFileId" select="generate-id(.)"/>
+        <div id="{$derivate}{$uniqueFileId}" class="font-weight-bold d-flex list-group list-group-root">
+            <a onclick="$('#{$derivate}{$uniqueFileId}cbButton').toggleClass('fa-chevron-right fa-chevron-down');"
+               data-toggle="collapse" href="#collapse{$derivate}{$uniqueFileId}"
+               class="text-left d-flex flex-md-row flex-grow-1 list-group-item align-items-center">
+                <i id="{$derivate}{$uniqueFileId}cbButton" class="fa fa-chevron-right ml-auto mr-1"/>
+                <span class="flex-grow-1 font-weight-bold text-break">
+                    <xsl:value-of select="$name"/>
+                </span>
+                <span class="badge badge-{$badgecolor} badge-pill align-self-center">
+                    <xsl:choose>
+                        <xsl:when test="$badgecolor = 'warning'">!</xsl:when>
+                        <xsl:otherwise>
+                            <xsl:value-of select="count(failed)"/>
+                        </xsl:otherwise>
+                    </xsl:choose>
+                </span>
+            </a>
+        </div>
+        <ul class="list-group collapse" id="collapse{$derivate}{$uniqueFileId}">
+            <li class="list-group-item d-flex flex-column flex-xl-row flex-grow-2 text-break">
+                <xsl:choose>
+                    <xsl:when test="$ValidationError">
+                        <xsl:apply-templates select="failed" mode="displayValidationError"/>
+                        <span class="flex-grow-1 col-xl-8 align-items-center">
+                            <p class="text-danger mb-2">
+                                <xsl:value-of select="i18n:translate('pdf.errorbox.validationerror.message')"/>
+                            </p>
+                        </span>
+                    </xsl:when>
+                    <xsl:otherwise>
+                        <p class="flex-grow-1 col-xl-8 align-items-center">
+                            <span class="text-muted pdf-term">
+                                <xsl:value-of select="concat(i18n:translate('pdf.errorbox.conformity.level'), ': ')"/>
+                            </span>
+                            <span class="pdf-value">
+                                <xsl:value-of select="concat('PDF/A-', @flavour)"/>
+                            </span>
+                        </p>
+                    </xsl:otherwise>
+                </xsl:choose>
+
+                <xsl:variable name="downloadLink"
+                              select="concat($ServletsBaseURL, 'MCRFileNodeServlet/', $derivate, '/', mcrxsl:encodeURIPath(@name))"/>
+                <div class="w-100 d-flex align-self-center justify-content-center">
+                    <a role="button" href="{$downloadLink}" target="_blank"
+                       class="btn btn-primary d-flex justify-content-center align-items-center w-100 py-2">
+                        <xsl:value-of select="concat(i18n:translate('pdf.errorbox.button.download'), ' ')"/>
+                        <i class="fas fa-download ms-2"/>
+                    </a>
+                </div>
+            </li>
+
+            <xsl:choose>
+                <xsl:when test="not($ValidationError)">
+                    <xsl:apply-templates select="failed" mode="displayPdfError"/>
+                </xsl:when>
+                <xsl:when test="$ValidationError">
+                    <xsl:apply-templates select="exceptions">
+                        <xsl:with-param name="uniqueName" select="concat($derivate, $uniqueFileId)"/>
+                    </xsl:apply-templates>
+                </xsl:when>
+            </xsl:choose>
+        </ul>
+    </xsl:template>
+
+    <xsl:template match="exceptions">
+        <xsl:param name="uniqueName" select="'uniqueStacktraceName'"/>
+        <a onclick="$('#{$uniqueName}stacktracecbButton').toggleClass('fa-chevron-right fa-chevron-down');"
+           data-toggle="collapse" href="#collapse{$uniqueName}stacktrace"
+           class="text-left text-dark d-flex flex-md-row flex-grow-1 list-group-item align-items-center"
+           style="text-decoration: none;">
+            <i id="{$uniqueName}stacktracecbButton" class="fa fa-chevron-right ml-auto mr-1"></i>
+            <span class="flex-grow-1 font-weight-bold text-break">
+                <xsl:value-of select="'Stack trace'"/>
+            </span>
+        </a>
+        <div id="collapse{$uniqueName}stacktrace" class="collapse list-group-item text-center"
+             style="overflow-x: auto;">
+            <xsl:for-each select="exception">
+                <xsl:call-template name="render-exception">
+                    <xsl:with-param name="exception" select="."/>
+                </xsl:call-template>
+            </xsl:for-each>
+        </div>
+    </xsl:template>
+
+    <xsl:template name="render-exception">
+        <xsl:param name="exception"/>
+
+
+        <xsl:variable name="currentId" select="generate-id($exception)"/>
+
+        <ul class="list-unstyled pl-3" id="{$currentId}">
+            <li class="alert alert-info" role="alert">
+                <xsl:value-of select="$exception/message/@message"/>
+            </li>
+            <li class="text-primary font-italic" style="font-size: 1em;">
+                <xsl:value-of select="$exception/class/@name"/>
+            </li>
+            <xsl:call-template name="render-exception-details">
+                <xsl:with-param name="exception" select="$exception"/>
+            </xsl:call-template>
+        </ul>
+
+        <xsl:if test="$exception/suppressed/exception">
+            <xsl:for-each select="$exception/suppressed/exception">
+                <xsl:call-template name="render-exception">
+                    <xsl:with-param name="exception" select="."/>
+                </xsl:call-template>
+            </xsl:for-each>
+        </xsl:if>
+    </xsl:template>
+
+    <xsl:template name="render-exception-details">
+        <xsl:param name="exception"/>
+
+
+        <pre style="font-size: 0.8em;">
+            <code>
+                <xsl:for-each select="$exception/stackTrace/frame">
+                    <xsl:value-of select="@text"/>
+                    <xsl:text>&#10;</xsl:text>
+                </xsl:for-each>
+            </code>
+        </pre>
+
+
+        <xsl:if test="$exception/cause/exception">
+            <p>
+                <strong>Caused by:</strong>
+            </p>
+            <xsl:text>&#10;</xsl:text>
+            <li class="alert alert-info" role="alert">
+                <xsl:value-of select="$exception/cause/exception/message/@message"/>
+            </li>
+            <li class="text-primary font-italic" style="font-size: 1em;">
+                <xsl:value-of select="$exception/cause/exception/class/@name"/>
+            </li>
+            <xsl:call-template name="render-exception-details">
+                <xsl:with-param name="exception" select="$exception/cause/exception"/>
+            </xsl:call-template>
+        </xsl:if>
+
+
+        <xsl:for-each select="$exception/suppressed/exception">
+            <li class="alert alert-info" role="alert">
+                <xsl:value-of select="$exception/suppressed/exception/message/@message"/>
+            </li>
+            <li class="text-primary font-italic" style="font-size: 1em;">
+                <xsl:value-of select="$exception/suppressed/exception/class/@name"/>
+            </li>
+            <p>Suppressed:</p>
+            <xsl:call-template name="render-exception-details">
+                <xsl:with-param name="exception" select="."/>
+            </xsl:call-template>
+        </xsl:for-each>
+    </xsl:template>
+
+
+    <xsl:template match="failed" mode="displayPdfError">
+        <li class="list-group-item d-flex flex-column flex-xl-row flex-grow-1 text-break">
+            <p class="flex-grow-1 col-xl-8 align-items-center">
+                <span class="text-muted pdf-term">
+                    <xsl:value-of select="concat(i18n:translate('pdf.errorbox.specification'),': ')"/>
+                </span>
+                <span class="pdf-value">
+                    <xsl:value-of select="concat(' ', @specification, ' ')"/>
+                </span>
+                <span class="text-muted pdf-term">
+                    <xsl:value-of select="concat(i18n:translate('pdf.errorbox.clause'),': ')"/>
+                </span>
+                <span class="pdf-value">
+                    <xsl:value-of select="concat(' ', @clause, ' ')"/>
+                </span>
+                <span class="text-muted pdf-term">
+                    <xsl:value-of select="concat(i18n:translate('pdf.errorbox.test'),': ')"/>
+                </span>
+                <span class="pdf-value">
+                    <xsl:value-of select="concat(' ', @testNumber, ' ')"/>
+                </span>
+            </p>
+            <xsl:choose>
+                <xsl:when test="not(@link)">
+                    <div class="w-100 d-flex align-self-center justify-content-center">
+                        <a role="button" href="{@Link}" target="_blank"
+                           class="btn btn-info col d-flex justify-content-center align-items-center w-100 py-2">
+                            <xsl:value-of select="concat(i18n:translate('pdf.errorbox.button.info'),' ')"/>
+                            <i class="fas fa-external-link-alt ms-2"></i>
+                        </a>
+                    </div>
+                </xsl:when>
+                <xsl:otherwise>
+                    <div class="text-center alert alert-danger col" role="alert">
+                        <xsl:value-of select="i18n:translate('pdf.errorbox.unknown.error')"/>
+                    </div>
+                </xsl:otherwise>
+            </xsl:choose>
+        </li>
+    </xsl:template>
+
+    <xsl:template match="failed" mode="displayValidationError">
+        <span class="flex-grow-1 col-xl-8 align-items-center">
+            <p class="text-danger mb-2">
+                <xsl:value-of select="i18n:translate('pdf.errorbox.validationerror.message')"/>
+            </p>
+        </span>
+    </xsl:template>
+
+
+    <xsl:template name="pdfError.getFilename">
+        <xsl:param name="filePath"/>
+        <xsl:variable name="rest-of" select="substring-after($filePath, '/')"/>
+        <xsl:choose>
+            <xsl:when test="contains($rest-of, '/')">
+                <xsl:call-template name="pdfError.getFilename">
+                    <xsl:with-param name="filePath" select="$rest-of"/>
+                </xsl:call-template>
+            </xsl:when>
+            <xsl:otherwise>
+                <xsl:if test="normalize-space($rest-of)">
+                    <xsl:value-of select="$rest-of"/>
+                </xsl:if>
+                <xsl:if test="not(normalize-space($rest-of))">
+                    <xsl:value-of select="$filePath"/>
+                </xsl:if>
+            </xsl:otherwise>
+        </xsl:choose>
+    </xsl:template>
+</xsl:stylesheet>
diff --git a/mir-module/src/main/resources/xsl/metadata/mir-workflow.xsl b/mir-module/src/main/resources/xsl/metadata/mir-workflow.xsl
index 843114786e..a9a3b09d74 100644
--- a/mir-module/src/main/resources/xsl/metadata/mir-workflow.xsl
+++ b/mir-module/src/main/resources/xsl/metadata/mir-workflow.xsl
@@ -7,7 +7,7 @@
 
   <xsl:import href="xslImport:modsmeta:metadata/mir-workflow.xsl"/>
   <xsl:import href="xslImport:mirworkflow:metadata/mir-workflow.xsl"/>
-
+  <xsl:import href="mir-pdf-errorbox.xsl"/>
   <xsl:param name="layout" select="'$'"/>
   <xsl:param name="MIR.Workflow.Box" select="'false'"/>
   <xsl:param name="MIR.Workflow.ReviewDerivateRequired" select="'true'"/>
@@ -15,6 +15,7 @@
   <xsl:param name="CurrentUser"/>
 
   <xsl:param name="MIR.Workflow.Debug" select="'false'"/>
+  <xsl:param name="MIR.Workflow.PDFValidation" select="'false'"/>
   <xsl:key use="@id" name="rights" match="/mycoreobject/rights/right"/>
   <xsl:variable name="id" select="/mycoreobject/@ID"/>
 
@@ -127,6 +128,10 @@
         Dokument submitted
       </xsl:message>
     </xsl:if>
+
+    <xsl:if test="normalize-space($MIR.Workflow.PDFValidation)='true'">
+      <xsl:apply-templates select="." mode="displayPdfError"/>
+    </xsl:if>
   </xsl:template>
 
   <xsl:template match="mycoreobject" mode="creatorReview" priority="10">