diff --git a/htdocs/core/ajax/onlineSign.php b/htdocs/core/ajax/onlineSign.php
index 994ba5c42f3..5f3cc281f90 100644
--- a/htdocs/core/ajax/onlineSign.php
+++ b/htdocs/core/ajax/onlineSign.php
@@ -69,10 +69,10 @@ $type = $mode;
 // Check securitykey
 $securekeyseed = '';
 if ($type == 'proposal') {
-	$securekeyseed = $conf->global->PROPOSAL_ONLINE_SIGNATURE_SECURITY_TOKEN;
+	$securekeyseed = isset($conf->global->PROPOSAL_ONLINE_SIGNATURE_SECURITY_TOKEN) ? $conf->global->PROPOSAL_ONLINE_SIGNATURE_SECURITY_TOKEN : '';
 }
 
-if (!dol_verifyHash($securekeyseed.$type.$ref, $SECUREKEY, '0')) {
+if (empty($SECUREKEY) || !dol_verifyHash($securekeyseed.$type.$ref, $SECUREKEY, '0')) {
 	http_response_code(403);
 	print 'Bad value for securitykey. Value provided '.dol_escape_htmltag($SECUREKEY).' does not match expected value for ref='.dol_escape_htmltag($ref);
 	exit(-1);
@@ -122,28 +122,40 @@ if ($action == "importSignature") {
 			}
 
 			if (!$error) {
-				$newpdffilename = $upload_dir.$ref."_signed-".$date.".pdf";
+				// Defined modele of doc
+				$directdownloadlink = $object->getLastMainDocLink('proposal');
 
-				$pdf = pdf_getInstance();
-				$pdf->Open();
-				$pdf->AddPage();
-				$pagecount = $pdf->setSourceFile($upload_dir.$ref.".pdf");		// original PDF
+				if (preg_match('/\.pdf/i', $directdownloadlink)) {
+					$newpdffilename = $upload_dir.$ref."_signed-".$date.".pdf";
+					$sourcefile = $upload_dir.$ref.".pdf";
 
-				for ($i=1;$i<($pagecount+1);$i++) {
-					if ($i>1) $pdf->AddPage();
-					$tppl=$pdf->importPage($i);
-					$pdf->useTemplate($tppl);
+					if (dol_is_file($sourcefile)) {
+						$pdf = pdf_getInstance();
+						$pdf->Open();
+						$pdf->AddPage();
+						$pagecount = $pdf->setSourceFile($sourcefile);		// original PDF
+
+						for ($i=1; $i<($pagecount+1); $i++) {
+							if ($i>1) $pdf->AddPage();
+							$tppl=$pdf->importPage($i);
+							$pdf->useTemplate($tppl);
+						}
+
+						$pdf->Image($upload_dir.$filename, 129, 239.6, 60, 15);	// FIXME Position will be wrong with non A4 format. Use a value from width and height of page minus relative offset.
+						$pdf->Close();
+						$pdf->Output($newpdffilename, "F");
+
+						// Index the new file and update the last_main_doc property of object.
+						$object->indexFile($newpdffilename, 1);
+					}
+				} else {
+					// Adding signature on doc not yet supported
 				}
+			}
 
-				$pdf->Image($upload_dir.$filename, 129, 239.6, 60, 15);	// FIXME Position will be wrong with non A4 format. Use a value from width and height of page minus relative offset.
-				$pdf->Close();
-				$pdf->Output($newpdffilename, "F");
-
+			if (!$error) {
 				$db->begin();
 
-				// Index the new file and update the last_main_doc property of object.
-				$object->indexFile($newpdffilename, 1);
-
 				$online_sign_ip = getUserRemoteIP();
 				$online_sign_name = '';		// TODO Ask name on form to sign
 
diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index 9cfe5b47de5..62782d28a96 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -602,6 +602,8 @@ abstract class CommonObject
 
 
 	// No constructor as it is an abstract class
+
+
 	/**
 	 * Check an object id/ref exists
 	 * If you don't need/want to instantiate object and just need to know if object exists, use this method instead of fetch
@@ -648,6 +650,7 @@ abstract class CommonObject
 		return -1;
 	}
 
+
 	/**
 	 * Method to output saved errors
 	 *
@@ -5530,7 +5533,9 @@ abstract class CommonObject
 	 * Index a file into the ECM database
 	 *
 	 * @param	string	$destfull				Full path of file to index
-	 * @param	int		$update_main_doc_field	Update field main_doc file into table of object
+	 * @param	int		$update_main_doc_field	Update field main_doc fied into the table of object.
+	 * 											This param is set when called for a document generation if document generator hase
+	 * 											->update_main_doc_field set and returns ->result['fullpath'].
 	 * @return	int								<0 if KO, >0 if OK
 	 */
 	public function indexFile($destfull, $update_main_doc_field)
diff --git a/htdocs/core/modules/propale/doc/doc_generic_proposal_odt.modules.php b/htdocs/core/modules/propale/doc/doc_generic_proposal_odt.modules.php
index 6f91d676949..7f2e0733e9d 100644
--- a/htdocs/core/modules/propale/doc/doc_generic_proposal_odt.modules.php
+++ b/htdocs/core/modules/propale/doc/doc_generic_proposal_odt.modules.php
@@ -71,6 +71,7 @@ class doc_generic_proposal_odt extends ModelePDFPropales
 		$this->db = $db;
 		$this->name = "ODT templates";
 		$this->description = $langs->trans("DocumentModelOdt");
+		$this->update_main_doc_field = 1; // Save the name of generated file as the main doc when generating a doc with this template
 		$this->scandir = 'PROPALE_ADDON_PDF_ODT_PATH'; // Name of constant that is used to save list of directories to scan
 
 		// Page size for A4 format
diff --git a/htdocs/core/modules/propale/modules_propale.php b/htdocs/core/modules/propale/modules_propale.php
index ee7df804c59..dcb386947a3 100644
--- a/htdocs/core/modules/propale/modules_propale.php
+++ b/htdocs/core/modules/propale/modules_propale.php
@@ -67,7 +67,7 @@ abstract class ModelePDFPropales extends CommonDocGenerator
 
 
 /**
- *	Classe mere des modeles de numerotation des references de propales
+ *	Parent class for numbering rules of proposals
  */
 abstract class ModeleNumRefPropales
 {
diff --git a/htdocs/public/onlinesign/newonlinesign.php b/htdocs/public/onlinesign/newonlinesign.php
index d1020dc2c1d..5e920444c35 100644
--- a/htdocs/public/onlinesign/newonlinesign.php
+++ b/htdocs/public/onlinesign/newonlinesign.php
@@ -328,7 +328,7 @@ if ($source == 'proposal') {
 	// Object
 
 	$text = '<b>'.$langs->trans("SignatureProposalRef", $proposal->ref).'</b>';
-	print '<tr class="CTableRow2"><td class="CTableRow2 tdtop">'.$langs->trans("Designation");
+	print '<tr class="CTableRow2"><td class="CTableRow2">'.$langs->trans("Designation");
 	print '</td><td class="CTableRow2">'.$text;
 	if ($proposal->status == $proposal::STATUS_VALIDATED) {
 		$directdownloadlink = $proposal->getLastMainDocLink('proposal');