diff --git a/enrol/authorize/authorizenetlib.php b/enrol/authorize/authorizenetlib.php
index f1a2c7ea9da..5c7be9cc778 100644
--- a/enrol/authorize/authorizenetlib.php
+++ b/enrol/authorize/authorizenetlib.php
@@ -295,7 +295,7 @@ function authorize_action(&$order, &$message, &$extra, $action=AN_ACTION_NONE, $
     $responsecode = intval($response[0]);
     if ($responsecode == AN_APPROVED || $responsecode == AN_REVIEW)
     {
-        $transid = intval($response[6]);
+        $transid = floatval($response[6]);
         if ($test || $transid == 0) {
             return $responsecode; // don't update original transaction in test mode.
         }
diff --git a/enrol/authorize/db/install.xml b/enrol/authorize/db/install.xml
index 646e6479cd7..9b6ee31354c 100644
--- a/enrol/authorize/db/install.xml
+++ b/enrol/authorize/db/install.xml
@@ -12,7 +12,7 @@
         <FIELD NAME="ccname" TYPE="char" LENGTH="255" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="refundinfo" NEXT="courseid"/>
         <FIELD NAME="courseid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="ccname" NEXT="userid"/>
         <FIELD NAME="userid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="courseid" NEXT="transid"/>
-        <FIELD NAME="transid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="userid" NEXT="status"/>
+        <FIELD NAME="transid" TYPE="int" LENGTH="20" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="userid" NEXT="status"/>
         <FIELD NAME="status" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="transid" NEXT="timecreated"/>
         <FIELD NAME="timecreated" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="status" NEXT="settletime"/>
         <FIELD NAME="settletime" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="timecreated" NEXT="amount"/>
@@ -35,7 +35,7 @@
         <FIELD NAME="orderid" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="id" NEXT="status"/>
         <FIELD NAME="status" TYPE="int" LENGTH="1" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="orderid" NEXT="amount"/>
         <FIELD NAME="amount" TYPE="char" LENGTH="10" NOTNULL="true" SEQUENCE="false" ENUM="false" PREVIOUS="status" NEXT="transid"/>
-        <FIELD NAME="transid" TYPE="int" LENGTH="10" NOTNULL="false" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="amount" NEXT="settletime"/>
+        <FIELD NAME="transid" TYPE="int" LENGTH="20" NOTNULL="false" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="amount" NEXT="settletime"/>
         <FIELD NAME="settletime" TYPE="int" LENGTH="10" NOTNULL="true" UNSIGNED="true" DEFAULT="0" SEQUENCE="false" ENUM="false" PREVIOUS="transid"/>
       </FIELDS>
       <KEYS>
@@ -47,4 +47,4 @@
       </INDEXES>
     </TABLE>
   </TABLES>
-</XMLDB>
\ No newline at end of file
+</XMLDB>
diff --git a/enrol/authorize/db/upgrade.php b/enrol/authorize/db/upgrade.php
index 5a4ec888312..7a39905827f 100644
--- a/enrol/authorize/db/upgrade.php
+++ b/enrol/authorize/db/upgrade.php
@@ -59,6 +59,46 @@ function xmldb_enrol_authorize_upgrade($oldversion=0) {
         }
     }
 
+    if ($result && $oldversion < 2006112902) {
+        /// enrol_authorize.transid
+        /// Define index transid (not unique) to be dropped form enrol_authorize
+        $table = new XMLDBTable('enrol_authorize');
+        $index = new XMLDBIndex('transid');
+        $index->setAttributes(XMLDB_INDEX_NOTUNIQUE, array('transid'));
+        drop_index($table, $index);
+
+        /// Changing precision of field transid on table enrol_authorize to (20)
+        $table = new XMLDBTable('enrol_authorize');
+        $field = new XMLDBField('transid');
+        $field->setAttributes(XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, XMLDB_NOTNULL, null, null, null, '0', 'userid');
+        change_field_precision($table, $field);
+
+        /// Launch add index transid again
+        $table = new XMLDBTable('enrol_authorize');
+        $index = new XMLDBIndex('transid');
+        $index->setAttributes(XMLDB_INDEX_NOTUNIQUE, array('transid'));
+        add_index($table, $index);
+
+        /// enrol_authorize_refunds.transid
+        /// Define index transid (not unique) to be dropped form enrol_authorize_refunds
+        $table = new XMLDBTable('enrol_authorize_refunds');
+        $index = new XMLDBIndex('transid');
+        $index->setAttributes(XMLDB_INDEX_NOTUNIQUE, array('transid'));
+        drop_index($table, $index);
+
+        /// Changing precision of field transid on table enrol_authorize_refunds to (20)
+        $table = new XMLDBTable('enrol_authorize_refunds');
+        $field = new XMLDBField('transid');
+        $field->setAttributes(XMLDB_TYPE_INTEGER, '20', XMLDB_UNSIGNED, null, null, null, null, '0', 'amount');
+        change_field_precision($table, $field);
+
+        /// Launch add index transid again
+        $table = new XMLDBTable('enrol_authorize_refunds');
+        $index = new XMLDBIndex('transid');
+        $index->setAttributes(XMLDB_INDEX_NOTUNIQUE, array('transid'));
+        add_index($table, $index);
+    }
+
     return $result;
 }
 
diff --git a/enrol/authorize/locallib.php b/enrol/authorize/locallib.php
index 45c80d141e5..f3b229cf860 100644
--- a/enrol/authorize/locallib.php
+++ b/enrol/authorize/locallib.php
@@ -561,7 +561,7 @@ function authorize_get_status_action($order)
 
     $canmanage = has_capability('enrol/authorize:managepayments', get_context_instance(CONTEXT_COURSE, $order->courseid));
 
-    if (intval($order->transid) == 0) { // test transaction or new order
+    if (floatval($order->transid) == 0) { // test transaction or new order
         if ($order->timecreated < $newordertime) {
             if ($canmanage) {
                 $ret->actions = array(ORDER_DELETE);
diff --git a/enrol/authorize/version.php b/enrol/authorize/version.php
index 297dbbbdbf5..ce8b723cb63 100755
--- a/enrol/authorize/version.php
+++ b/enrol/authorize/version.php
@@ -1,6 +1,6 @@
 <?php // $Id$
 
-$plugin->version  = 2006112901;
+$plugin->version  = 2006112902;
 $plugin->requires = 2006100401;
 
 ?>