diff --git a/htdocs/core/class/extrafields.class.php b/htdocs/core/class/extrafields.class.php
index 3a396e365d7..768031467bc 100644
--- a/htdocs/core/class/extrafields.class.php
+++ b/htdocs/core/class/extrafields.class.php
@@ -1948,14 +1948,15 @@ class ExtraFields
 	/**
 	 * Fill array_options property of object by extrafields value (using for data sent by forms)
 	 *
-	 * @param   array	$extralabels    Deprecated (old $array of extrafields, now set this to null)
-	 * @param   object	$object         Object
-	 * @param	string	$onlykey		Only some keys are filled:
-	 *                                  'string' => When we make update of only one extrafield ($action = 'update_extras'), calling page can set this to avoid to have other extrafields being reset.
-	 *                                  '@GETPOSTISSET' => When we make update of several extrafields ($action = 'update'), calling page can set this to avoid to have fields not into POST being reset.
-	 * @return	int						1 if array_options set, 0 if no value, -1 if error (field required missing for example)
+	 * @param   array	$extralabels    	Deprecated (old $array of extrafields, now set this to null)
+	 * @param   object	$object         	Object
+	 * @param	string	$onlykey			Only some keys are filled:
+	 *                                  	'string' => When we make update of only one extrafield ($action = 'update_extras'), calling page can set this to avoid to have other extrafields being reset.
+	 *                                  	'@GETPOSTISSET' => When we make update of several extrafields ($action = 'update'), calling page can set this to avoid to have fields not into POST being reset.
+	 * @param	int		$todefaultifmissing 1=Set value to the default value in database if value is mandatory and missing
+	 * @return	int							1 if array_options set, 0 if no value, -1 if error (field required missing for example)
 	 */
-	public function setOptionalsFromPost($extralabels, &$object, $onlykey = '')
+	public function setOptionalsFromPost($extralabels, &$object, $onlykey = '', $todefaultifmissing = 0)
 	{
 		global $_POST, $langs;
 
@@ -2015,8 +2016,10 @@ class ExtraFields
 						|| (!is_array($_POST["options_".$key]) && isset($_POST["options_".$key]) && $this->attributes[$object->table_element]['type'][$key] == 'sellist' && $_POST['options_'.$key] == '0')
 						|| (is_array($_POST["options_".$key]) && empty($_POST["options_".$key]))) {
 						//print 'ccc'.$value.'-'.$this->attributes[$object->table_element]['required'][$key];
+
+						// Field is not defined. We mark this as a problem. We may fix it later if there is a default value and $todefaultifmissing is set.
 						$nofillrequired++;
-						$error_field_required[] = $langs->transnoentitiesnoconv($value);
+						$error_field_required[$key] = $langs->transnoentitiesnoconv($value);
 					}
 				}
 
@@ -2047,12 +2050,22 @@ class ExtraFields
 					}
 				}
 
+				if (!empty($error_field_required[$key]) && $todefaultifmissing) {
+					// Value is required but we have a default value and we asked to set empty value to the default value
+					if (!empty($this->attributes[$object->table_element]['default']) && !is_null($this->attributes[$object->table_element]['default'][$key])) {
+						$value_key = $this->attributes[$object->table_element]['default'][$key];
+						unset($error_field_required[$key]);
+						$nofillrequired--;
+					}
+				}
+
 				$object->array_options["options_".$key] = $value_key;
 			}
 
 			if ($nofillrequired) {
 				$langs->load('errors');
-				setEventMessages($langs->trans('ErrorFieldsRequired').' : '.implode(', ', $error_field_required), null, 'errors');
+				$this->error = $langs->trans('ErrorFieldsRequired').' : '.implode(', ', $error_field_required);
+				setEventMessages($this->error, null, 'errors');
 				return -1;
 			} else {
 				return 1;
diff --git a/htdocs/core/lib/project.lib.php b/htdocs/core/lib/project.lib.php
index 68e76e85ca3..56aa24a8523 100644
--- a/htdocs/core/lib/project.lib.php
+++ b/htdocs/core/lib/project.lib.php
@@ -509,12 +509,14 @@ function project_admin_prepare_head()
 	$head[$h][2] = 'attributes_task';
 	$h++;
 
-	$langs->load("members");
+	if (!empty($conf->global->PROJECT_USE_OPPORTUNITIES)) {
+		$langs->load("members");
 
-	$head[$h][0] = DOL_URL_ROOT.'/projet/admin/website.php';
-	$head[$h][1] = $langs->trans("BlankSubscriptionForm");
-	$head[$h][2] = 'website';
-	$h++;
+		$head[$h][0] = DOL_URL_ROOT.'/projet/admin/website.php';
+		$head[$h][1] = $langs->trans("BlankSubscriptionForm");
+		$head[$h][2] = 'website';
+		$h++;
+	}
 
 	complete_head_from_modules($conf, $langs, null, $head, $h, 'project_admin', 'remove');
 
diff --git a/htdocs/projet/admin/project.php b/htdocs/projet/admin/project.php
index 4bfb899cffe..36ef3a501ff 100644
--- a/htdocs/projet/admin/project.php
+++ b/htdocs/projet/admin/project.php
@@ -265,7 +265,7 @@ print '<td width="80">&nbsp;</td></tr>'."\n";
 print '<tr class="oddeven">';
 print '<td width="80%">'.$langs->trans("ManageOpportunitiesStatus").'</td>';
 print '<td width="60" class="right">';
-print ajax_constantonoff("PROJECT_USE_OPPORTUNITIES");
+print ajax_constantonoff("PROJECT_USE_OPPORTUNITIES", null, null, 0, 0, 1);
 print '</td><td class="right">';
 print "</td>";
 print '</tr>';
diff --git a/htdocs/public/project/new.php b/htdocs/public/project/new.php
index 85106ce51de..4838c88c5a1 100644
--- a/htdocs/public/project/new.php
+++ b/htdocs/public/project/new.php
@@ -206,16 +206,53 @@ if (empty($reshook) && $action == 'add') {
 		$errmsg .= $langs->trans("ErrorModuleSetupNotComplete", $langs->transnoentitiesnoconv("Project"))."<br>\n";
 	}
 
-	if (!$error) {
-		$proj = new Project($db);
-		$thirdparty = new Societe($db);
+	$proj = new Project($db);
+	$thirdparty = new Societe($db);
 
+	if (!$error) {
 		// Search thirdparty and set it if found to the new created project
 		$result = $thirdparty->fetch(0, '', '', '', '', '', '', '', '', '', $object->email);
 		if ($result > 0) {
 			$proj->socid = $thirdparty->id;
-		}
+		} else {
+			// Create the prospect
+			if (GETPOST('societe')) {
+				$thirdparty->name =  GETPOST('societe');
+				$thirdparty->name_alias = dolGetFirstLastname(GETPOST('firstname'), GETPOST('lastname'));
+			} else {
+				$thirdparty->name = dolGetFirstLastname(GETPOST('firstname'), GETPOST('lastname'));
+			}
+			$thirdparty->address = GETPOST('address');
+			$thirdparty->zip = GETPOST('zip');
+			$thirdparty->town = GETPOST('town');
+			$thirdparty->country_id = GETPOST('country_id', 'int');
+			$thirdparty->state_id = GETPOST('state_id');
+			$thirdparty->client = $thirdparty::PROSPECT;
+			$thirdparty->code_client = 'auto';
+			$thirdparty->code_fournisseur = 'auto';
 
+			// Fill array 'array_options' with data from the form
+			$extrafields->fetch_name_optionals_label($thirdparty->table_element);
+			$ret = $extrafields->setOptionalsFromPost(null, $thirdparty, '', 1);
+			//var_dump($thirdparty->array_options);exit;
+			if ($ret < 0) {
+				$error++;
+				$errmsg = ($extrafields->error ? $extrafields->error.'<br>' : '').join('<br>', $extrafields->errors);
+			}
+
+			if (!$error) {
+				$result = $thirdparty->create($user);
+				if ($result <= 0) {
+					$error++;
+					$errmsg = ($thirdparty->error ? $thirdparty->error.'<br>' : '').join('<br>', $thirdparty->errors);
+				} else {
+					$proj->socid = $thirdparty->id;
+				}
+			}
+		}
+	}
+
+	if (!$error) {
 		// Defined the ref into $defaultref
 		$defaultref = '';
 		$modele = empty($conf->global->PROJECT_ADDON) ? 'mod_project_simple' : $conf->global->PROJECT_ADDON;
diff --git a/htdocs/societe/class/societe.class.php b/htdocs/societe/class/societe.class.php
index 1d32063c27b..30f8515e92c 100644
--- a/htdocs/societe/class/societe.class.php
+++ b/htdocs/societe/class/societe.class.php
@@ -956,7 +956,7 @@ class Societe extends CommonObject
 					$sql .= ", accountancy_code_sell";
 					$sql .= ") VALUES (";
 					$sql .= $this->id;
-					$sql .= ", ".$conf->entity;
+					$sql .= ", ".((int) $conf->entity);
 					$sql .= ", '".$this->db->escape($this->accountancy_code_customer)."'";
 					$sql .= ", '".$this->db->escape($this->accountancy_code_supplier)."'";
 					$sql .= ", '".$this->db->escape($this->accountancy_code_buy)."'";