diff --git a/source/java/org/alfresco/rest/api/nodes/NodeRenditionsRelation.java b/source/java/org/alfresco/rest/api/nodes/NodeRenditionsRelation.java
index cd53519fe3..6dfa61b2da 100644
--- a/source/java/org/alfresco/rest/api/nodes/NodeRenditionsRelation.java
+++ b/source/java/org/alfresco/rest/api/nodes/NodeRenditionsRelation.java
@@ -23,6 +23,7 @@ import org.alfresco.rest.api.Renditions;
 import org.alfresco.rest.api.model.Rendition;
 import org.alfresco.rest.framework.BinaryProperties;
 import org.alfresco.rest.framework.WebApiDescription;
+import org.alfresco.rest.framework.core.exceptions.InvalidArgumentException;
 import org.alfresco.rest.framework.resource.RelationshipResource;
 import org.alfresco.rest.framework.resource.actions.interfaces.RelationshipResourceAction;
 import org.alfresco.rest.framework.resource.actions.interfaces.RelationshipResourceBinaryAction;
@@ -77,6 +78,13 @@ public class NodeRenditionsRelation implements RelationshipResourceAction.Read<R
     @Override
     public List<Rendition> create(String nodeId, List<Rendition> entity, Parameters parameters)
     {
+        // Temporary - pending future improvements to thumbnail service to minimise chance of
+        // missing/failed thumbnails (when requested/generated 'concurrently')
+        if (entity.size() > 1)
+        {
+            throw new InvalidArgumentException("Please specify one rendition entity id only");
+        }
+
         for (Rendition rendition : entity)
         {
             renditions.createRendition(nodeId, rendition, parameters);
diff --git a/source/test-java/org/alfresco/rest/api/tests/RenditionsTest.java b/source/test-java/org/alfresco/rest/api/tests/RenditionsTest.java
index 3b851d65b3..2e583d63f2 100644
--- a/source/test-java/org/alfresco/rest/api/tests/RenditionsTest.java
+++ b/source/test-java/org/alfresco/rest/api/tests/RenditionsTest.java
@@ -57,6 +57,7 @@ import org.junit.Test;
 import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.InputStream;
+import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
@@ -396,8 +397,15 @@ public class RenditionsTest extends AbstractBaseApiTest
         // renditionId is empty
         post(getNodeRenditionsUrl(contentNodeId), userOneN1.getId(), toJsonAsString(new Rendition().setId("")), 400);
 
+        // -ve test - we do not currently accept multiple create entities
+        List<Rendition> request = new ArrayList<>(2);
+        request .add(new Rendition().setId("doclib"));
+        request .add(new Rendition().setId("imgpreview"));
+        post(getNodeRenditionsUrl(contentNodeId), userOneN1.getId(), toJsonAsString(request), 400);
+
         // Create a node without any content
         String emptyContentNodeId = addToDocumentLibrary(userOneN1Site, "emptyDoc.txt", ContentModel.TYPE_CONTENT, userOneN1.getId());
+
         // The source node has no content
         post(getNodeRenditionsUrl(emptyContentNodeId), userOneN1.getId(), toJsonAsString(renditionRequest), 400);