diff --git a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ArticleInCollectedVolumePropertiesStep.java b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ArticleInCollectedVolumePropertiesStep.java
index b9022bd..cef56aa 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ArticleInCollectedVolumePropertiesStep.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ArticleInCollectedVolumePropertiesStep.java
@@ -495,7 +495,7 @@ public class ArticleInCollectedVolumePropertiesStep
         final String documentPath,
         final String collectedVolumeIdentifier
     ) {
-        models.put("articleNotFound", collectedVolumeIdentifier);
+        models.put("collectedVolumeNotFound", collectedVolumeIdentifier);
         return showStep(sectionIdentifier, documentPath);
     }
 
diff --git a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/InProceedingsPropertiesStep.java b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/InProceedingsPropertiesStep.java
index c0069e3..725feb5 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/InProceedingsPropertiesStep.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/InProceedingsPropertiesStep.java
@@ -14,7 +14,6 @@ import org.scientificcms.publications.InProceedings;
 import org.scientificcms.publications.Proceedings;
 import org.scientificcms.publications.ProceedingsManager;
 import org.scientificcms.publications.PublicationRepository;
-import org.scientificcms.publications.contenttypes.ArticleInCollectedVolumeItem;
 import org.scientificcms.publications.contenttypes.InProceedingsItem;
 import org.scientificcms.publications.ui.SciPublicationsUiConstants;
 import org.scientificcms.publications.ui.SciPublicationsUiMessageBundle;
diff --git a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ProceedingsPropertiesStep.java b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ProceedingsPropertiesStep.java
index 86529de..58c3eec 100644
--- a/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ProceedingsPropertiesStep.java
+++ b/sci-publications/src/main/java/org/scientificcms/publications/ui/contenttypes/ProceedingsPropertiesStep.java
@@ -42,7 +42,11 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 
 /**
- *
+ *<c:if test="#{authorshipNotFound != null}">
+                <div class="alert alert-warning" role="alert">
+                    #{SciPublicationsUiMessageBundle.getMessage('basicproperties.errors.authorship_not_found', [authorshipNotFound])}
+                </div>
+            </c:if>
  * @author <a href="mailto:jens.pelzetter@googlemail.com">Jens Pelzetter</a>
  */
 @RequestScoped
diff --git a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/articleincollectedvolume/edit-articleincollectedvolume.xhtml b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/articleincollectedvolume/edit-articleincollectedvolume.xhtml
index fe03604..844da37 100644
--- a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/articleincollectedvolume/edit-articleincollectedvolume.xhtml
+++ b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/articleincollectedvolume/edit-articleincollectedvolume.xhtml
@@ -14,6 +14,14 @@
         <ui:param name="authoringStepTitle"
                   value="#{SciPublicationsUiMessageBundle.getMessage('articleincollectedvolume.basicproperties.header', [SciCmsPublicationPropertiesStepModel.name])}" />
 
+        <ui:define name="publicationMessages">
+            <c:if test="#{collectedVolumeNotFound != null}">
+                <div class="alert alert-warning" role="alert">
+                    #{SciPublicationsUiMessageBundle.getMessage('articleincollectedvolume.basicproperties.errors.collectedvolume_not_found', [collectedVolumeNotFound])}
+                </div>
+            </c:if>
+        </ui:define>
+        
         <ui:define name="publicationBasicPropertiesForm">
 
             <bootstrap:formGroupNumber 
diff --git a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/collectedvolume/edit-collectedvolume.xhtml b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/collectedvolume/edit-collectedvolume.xhtml
index 40c53a3..6b33784 100644
--- a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/collectedvolume/edit-collectedvolume.xhtml
+++ b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/collectedvolume/edit-collectedvolume.xhtml
@@ -14,6 +14,20 @@
         <ui:param name="authoringStepTitle"
                   value="#{SciPublicationsUiMessageBundle.getMessage('collectedvolume.basicproperties.header', [SciCmsPublicationPropertiesStepModel.name])}" />
 
+        <ui:define name="publicationWithPublisherMessages">
+            <c:if test="#{articleNotFound != null}">
+                <div class="alert alert-warning" role="alert">
+                    #{SciPublicationsUiMessageBundle.getMessage('collectedvolume.basicproperties.errors.article_not_found', [articleNotFound])}
+                </div>
+            </c:if>
+            
+            <c:if test="#{articleNotPartOfCollectedVolume != null}">
+                <div class="alert alert-warning" role="alert">
+                    #{SciPublicationsUiMessageBundle.getMessage('collectedvolume.basicproperties.errors.article_not_part_of_collected_volume', [articleNotPartOfCollectedVolume])}
+                </div>
+            </c:if>
+        </ui:define>
+        
         <ui:define name="publicationWithPublisherProperties">
 
             <h3 class="mt-5">#{SciPublicationsUiMessageBundle['collectedvolume.basicproperties.articles.header']}</h3>
diff --git a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication-with-publisher.xhtml b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication-with-publisher.xhtml
index 6519cee..6525ff4 100644
--- a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication-with-publisher.xhtml
+++ b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication-with-publisher.xhtml
@@ -7,6 +7,16 @@
       xmlns:ui="http://xmlns.jcp.org/jsf/facelets">
     <ui:composition template="/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication.xhtml">
 
+        <ui:define name="publicationMessages">
+              <c:if test="#{publisherNotFound != null}">
+                <div class="alert alert-warning" role="alert">
+                    #{SciPublicationsUiMessageBundle.getMessage('basicproperties.errors.publisher_not_found', [publisherNotFound])}
+                </div>
+            </c:if>
+            
+            <ui:insert name="publicationWithPublisherMessages" />
+        </ui:define>
+        
         <ui:define name="publicationProperties">
 
             <h3 class="mt-5">#{SciPublicationsUiMessageBundle['publicationwithpublisher.publisher']}</h3>
diff --git a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication.xhtml b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication.xhtml
index 82d2346..010e256 100644
--- a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication.xhtml
+++ b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/edit-publication.xhtml
@@ -28,6 +28,8 @@
                     #{SciPublicationsUiMessageBundle.getMessage('basicproperties.errors.publisher_not_found', [publisherNotFound])}
                 </div>
             </c:if>
+            
+            <ui:insert name="publicationMessages" />
 
             <template id="authors-sort-error-general">
                 <div class="alert alert-warning mt-3" role="alert">
diff --git a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/inproceedings/edit-inproceedings.xhtml b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/inproceedings/edit-inproceedings.xhtml
index 4e8e2a2..10d330e 100644
--- a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/inproceedings/edit-inproceedings.xhtml
+++ b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/inproceedings/edit-inproceedings.xhtml
@@ -14,6 +14,14 @@
         <ui:param name="authoringStepTitle"
                   value="#{SciPublicationsUiMessageBundle.getMessage('inproceedings.basicproperties.header', [SciCmsPublicationPropertiesStepModel.name])}" />
 
+        <ui:define name="publicationMessages">
+             <c:if test="#{proceedingsNotFound != null}">
+                <div class="alert alert-warning" role="alert">
+                    #{SciPublicationsUiMessageBundle.getMessage('inproceedings.basicproperties.errors.proceedings_not_found', [proceedingsNotFound])}
+                </div>
+            </c:if>
+        </ui:define>
+        
         <ui:define name="publicationBasicPropertiesForm">
 
             <bootstrap:formGroupNumber 
diff --git a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/proceedings/edit-proceedings.xhtml b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/proceedings/edit-proceedings.xhtml
index 51240b9..4a81172 100644
--- a/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/proceedings/edit-proceedings.xhtml
+++ b/sci-publications/src/main/resources/WEB-INF/views/org/scientificcms/contenttypes/ui/proceedings/edit-proceedings.xhtml
@@ -14,6 +14,38 @@
         <ui:param name="authoringStepTitle"
                   value="#{SciPublicationsUiMessageBundle.getMessage('proceedings.basicproperties.header', [SciCmsPublicationPropertiesStepModel.name])}" />
 
+        <ui:define name="publicationWithPublisherMessages">
+            <c:if test="#{invalidStartDate != null}">
+                <div class="alert alert-warning" role="alert">
+                    #{SciPublicationsUiMessageBundle.getMessage('proceedings.basicproperties.errors.start_date_invalid', [invalidStartDate])}
+                </div>
+            </c:if>
+            
+            <c:if test="#{invalidEndDate != null}">
+                <div class="alert alert-warning" role="alert">
+                    #{SciPublicationsUiMessageBundle.getMessage('proceedings.basicproperties.errors.end_date_invalid', [invalidEndDate])}
+                </div>
+            </c:if>
+            
+            <c:if test="#{paperNotFound != null}">
+                <div class="alert alert-warning" role="alert">
+                    #{SciPublicationsUiMessageBundle.getMessage('basicproperties.errors.paper_not_found', [paperNotFound])}
+                </div>
+            </c:if>
+            
+            <c:if test="#{paperNotPartOfProceedings != null}">
+                <div class="alert alert-warning" role="alert">
+                    #{SciPublicationsUiMessageBundle.getMessage('basicproperties.errors.paper_not_part_of_proceedings', [paperNotPartOfProceedings])}
+                </div>
+            </c:if>
+            
+            <c:if test="#{organizerNotFound != null}">
+                <div class="alert alert-warning" role="alert">
+                    #{SciPublicationsUiMessageBundle.getMessage('basicproperties.errors.organizer_not_found', [organizerNotFound])}
+                </div>
+            </c:if>
+        </ui:define>
+        
         <ui:define name="publicationWithPublisherProperties">
 
             <h3 class="mt-5">#{SciPublicationsUiMessageBundle['proceedings.basicproperties.papers.header']}</h3>
diff --git a/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle.properties b/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle.properties
index 3176444..11641f7 100644
--- a/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle.properties
+++ b/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle.properties
@@ -527,3 +527,12 @@ inproceedings.basicproperties.proceedings.remove.title=Remove paper from Proceed
 inproceedings.basicproperties.proceedings.remove.message=Are you sure to remove the paper {0} from the Proceedings {1}?
 inproceedings.extendedproperties.header=Edit extended properties of Inproceedings {0}
 proceedings.extendedproperties.header=Extended Properties of Proceedings {0}
+collectedvolume.basicproperties.errors.article_not_found=The selected article {0} was not found.
+collectedvolume.basicproperties.errors.article_not_part_of_collected_volume=The article {0} was selected for removal from this Collected Volume, but is not part of this Collected Volume.
+articleincollectedvolume.basicproperties.errors.collectedvolume_not_found=The selected Collected Volume with the identifier {0} was not found.
+proceedings.basicproperties.errors.start_date_invalid=The provided start date {0} is not a valid date.
+proceedings.basicproperties.errors.end_date_invalid=The provided end date {0} is not a valid date.
+basicproperties.errors.paper_not_found=The selected paper {0} was not found.
+basicproperties.errors.paper_not_part_of_proceedings=The paper {0} was selected for removal from these Proceeedings, but is not part of these Proceedings.
+basicproperties.errors.organizer_not_found=The selected organizer {0} was found.
+inproceedings.basicproperties.errors.proceedings_not_found=The selected Proceedings {0} were not found.
diff --git a/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle_de.properties b/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle_de.properties
index 9d42b84..4086f1d 100644
--- a/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle_de.properties
+++ b/sci-publications/src/main/resources/org/scientificcms/publications/ui/SciPublicationsBundle_de.properties
@@ -527,3 +527,12 @@ inproceedings.basicproperties.proceedings.remove.title=Beitrag aus Tagungsband e
 inproceedings.basicproperties.proceedings.remove.message=Sind Sie sicher, dass Sie den Beitrag {0} aus dem Tagungsband {1} entfernen wollen?
 inproceedings.extendedproperties.header=Tagungsbandbeitrag {0} bearbeiten
 proceedings.extendedproperties.header=Erweiterte Eigenschaften des Tagungsbandes {0}
+collectedvolume.basicproperties.errors.article_not_found=Der ausgew\u00e4hlte Artikel konnte nicht gefunden werden.
+collectedvolume.basicproperties.errors.article_not_part_of_collected_volume=Der Artikel {0} soll aus diesem Sammelband entfernt werden, ist aber nicht Teil dieses Sammelbandes.
+articleincollectedvolume.basicproperties.errors.collectedvolume_not_found=Das ausgew\u00e4hlte Sammelband {0} wurde nicht gefunden.
+proceedings.basicproperties.errors.start_date_invalid=Das f\u00fcr den Beginn angegebene Datum {0} ist kein valides Datum.
+proceedings.basicproperties.errors.end_date_invalid=Das f\u00fcr das Ende angegebene Datum {0} ist kein valides Datum.
+basicproperties.errors.paper_not_found=Der ausgew\u00e4hlte Beitrag {0} wurde nicht gefunden.
+basicproperties.errors.paper_not_part_of_proceedings=Der Beitrag {0} soll aus diesem Tagungsband entfernt werden, ist aber nicht Teil dieses Tagungsbandes.
+basicproperties.errors.organizer_not_found=Der ausgew\u00e4hlte Organisator wurde nicht gefunden.
+inproceedings.basicproperties.errors.proceedings_not_found=Der ausgew\u00e4hlte Tagungsband {0} wurde nicht gefunden.