diff --git a/htroot/IndexReIndexMonitor_p.html b/htroot/IndexReIndexMonitor_p.html
index 2fecd83bc..8ad897c97 100644
--- a/htroot/IndexReIndexMonitor_p.html
+++ b/htroot/IndexReIndexMonitor_p.html
@@ -12,6 +12,7 @@
         <p>In case that an index schema of the embedded/local index has changed, all documents with missing field entries can be indexed again with a reindex job.</p>
         <form action="IndexReIndexMonitor_p.html" method="post" enctype="multipart/form-data" accept-charset="UTF-8">
           <table><tr valign="top"><td>
+            <input type="hidden" name="transactionToken" value="#[transactionToken]#"/>
             <fieldset>                 
                 <table>
                     <tr>
@@ -62,6 +63,7 @@
            This runs transparent as background job. Documents are added to the crawler only if no other crawls are active
            and are added in small chunks.</p>
         <form action="IndexReIndexMonitor_p.html?setup=recrawljob" method="post" enctype="multipart/form-data" accept-charset="UTF-8">
+          <input type="hidden" name="transactionToken" value="#[transactionToken]#" />
           <table><tr valign="top"><td>
           <fieldset>
 
diff --git a/htroot/IndexReIndexMonitor_p.java b/htroot/IndexReIndexMonitor_p.java
index 1022435af..2fb5b3057 100644
--- a/htroot/IndexReIndexMonitor_p.java
+++ b/htroot/IndexReIndexMonitor_p.java
@@ -22,7 +22,7 @@ import net.yacy.cora.sorting.OrderedScoreMap;
 import net.yacy.kelondro.workflow.BusyThread;
 import net.yacy.migration;
 import net.yacy.crawler.RecrawlBusyThread;
-
+import net.yacy.data.TransactionManager;
 import net.yacy.search.Switchboard;
 import net.yacy.search.index.ReindexSolrBusyThread;
 import net.yacy.server.serverObjects;
@@ -34,12 +34,19 @@ public class IndexReIndexMonitor_p {
 
         final Switchboard sb = (Switchboard) env;
         final serverObjects prop = new serverObjects();
+        
+        /* Acquire a transaction token for the next possible POST form submissions */
+        final String nextTransactionToken = TransactionManager.getTransactionToken(header);
+        prop.put(TransactionManager.TRANSACTION_TOKEN_PARAM, nextTransactionToken);
 
         prop.put("docsprocessed", "0");
         prop.put("currentselectquery","");
         BusyThread reidxbt = sb.getThread(ReindexSolrBusyThread.THREAD_NAME);
         if (reidxbt == null) {
             if (post != null && post.containsKey("reindexnow") && sb.index.fulltext().connectedLocalSolr()) {
+            	/* Check the transaction is valid */
+            	TransactionManager.checkPostTransaction(header, post);
+            	
                 migration.reindexToschema(sb);
                 prop.put("querysize", "0");
                 prop.put("infomessage","reindex job started");
@@ -71,6 +78,9 @@ public class IndexReIndexMonitor_p {
             }
             
             if (post != null && post.containsKey("stopreindex")) {
+            	/* Check the transaction is valid */
+            	TransactionManager.checkPostTransaction(header, post);
+            	
                 sb.terminateThread(ReindexSolrBusyThread.THREAD_NAME, false);
                 prop.put("infomessage", "reindex job stopped");
                 prop.put("reindexjobrunning",0);
@@ -93,6 +103,9 @@ public class IndexReIndexMonitor_p {
         
         // to signal that a setting shall change the form provides a fixed parameter setup=recrawljob, if not present return status only
         if (post != null && "recrawljob".equals(post.get("setup"))) { // it's a command to recrawlThread
+        	
+        	/* Check the transaction is valid */
+        	TransactionManager.checkPostTransaction(header, post);
 
             if (recrawlbt == null) {
                 if (post.containsKey("recrawlnow") && sb.index.fulltext().connectedLocalSolr()) {
diff --git a/htroot/IndexSchema_p.html b/htroot/IndexSchema_p.html
index 2c85e78ce..184fc655d 100644
--- a/htroot/IndexSchema_p.html
+++ b/htroot/IndexSchema_p.html
@@ -60,6 +60,7 @@
     </form>
     <p><br /></p>
     <form action="IndexReIndexMonitor_p.html" method="post" enctype="multipart/form-data" accept-charset="UTF-8">
+      <input type="hidden" name="transactionToken" value="#[IndexReIndex_transactionToken]#"/>
       <fieldset>
         <legend><label>Reindex documents</label></legend>  
         <p>If you unselected some fields, old documents in the index still contain the unselected fields.
diff --git a/htroot/IndexSchema_p.java b/htroot/IndexSchema_p.java
index 5482bf05a..8a6c8a93d 100644
--- a/htroot/IndexSchema_p.java
+++ b/htroot/IndexSchema_p.java
@@ -26,6 +26,7 @@ import net.yacy.cora.federate.solr.SchemaConfiguration;
 import net.yacy.cora.federate.solr.SchemaDeclaration;
 import net.yacy.cora.protocol.RequestHeader;
 import net.yacy.cora.util.ConcurrentLog;
+import net.yacy.data.TransactionManager;
 import net.yacy.search.Switchboard;
 import net.yacy.search.schema.CollectionSchema;
 import net.yacy.search.schema.WebgraphConfiguration;
@@ -39,7 +40,7 @@ public class IndexSchema_p {
         // return variable that accumulates replacements
         final serverObjects prop = new serverObjects();
         final Switchboard sb = (Switchboard) env;
-
+        
         String schemaName = CollectionSchema.CORE_NAME;
         if (post != null) schemaName = post.get("core", schemaName); 
         SchemaConfiguration cs = schemaName.equals(CollectionSchema.CORE_NAME) ? sb.index.fulltext().getDefaultConfiguration() : sb.index.fulltext().getWebgraphConfiguration();
@@ -101,6 +102,10 @@ public class IndexSchema_p {
             }
         }
         
+		/* Acquire a transaction token for the next possible POST IndexReIndeMonitor_p form submission */
+		prop.put("IndexReIndex_" + TransactionManager.TRANSACTION_TOKEN_PARAM,
+				TransactionManager.getTransactionToken(header, "/IndexReIndexMonitor_p.html"));
+        
         int c = 0;
         boolean dark = false;
         // use enum SolrField to keep defined order