FIX error report not returned

htdocs/comm/mailing/class/mailing.class.php

@@ -319,6 +319,7 @@ class Mailing extends CommonObject
 		if ($result < 0)
 		{
 			$this->error=$object->error;
+			$this->errors=array_merge($this->errors, $object->errors);
 			$error++;
 		}
 

htdocs/comm/propal/class/propal.class.php

@@ -1285,7 +1285,12 @@ class Propal extends CommonObject
 		// Create clone
 		$object->context['createfromclone']='createfromclone';
 		$result=$object->create($user);
-		if ($result < 0) $error++;
+		if ($result < 0)
+		{
+		    $this->error = $object->error;
+		    $this->errors = array_merge($this->errors, $object->errors);
+		    $error++;
+		}
 
 		if (! $error)
 		{

htdocs/core/class/commonobject.class.php

@@ -4951,7 +4951,7 @@ abstract class CommonObject
 			   		if ($this->array_options[$key] === '') $mandatorypb=true;
 			   		if ($mandatorypb)
 			   		{
-			   			dol_syslog($this->error);
+			   		    dol_syslog("Mandatory extra field ".$key." is empty");
 			   			$this->errors[]=$langs->trans('ErrorFieldRequired', $attributeLabel);
 			   			return -1;
 			   		}

htdocs/product/class/productbatch.class.php

@@ -356,6 +356,7 @@ class Productbatch extends CommonObject
 		if ($result < 0)
 		{
 			$this->error=$object->error;
+			$this->errors=array_merge($this->errors, $object->errors);
 			$error++;
 		}
 

htdocs/product/class/productcustomerprice.class.php

@@ -924,6 +924,7 @@ class Productcustomerprice extends CommonObject
 		// Other options
 		if ($result < 0) {
 			$this->error = $object->error;
+			$this->errors=array_merge($this->errors, $object->errors);
 			$error++;
 		}
 

htdocs/product/class/propalmergepdfproduct.class.php

@@ -589,6 +589,7 @@ class Propalmergepdfproduct extends CommonObject
 		if ($result < 0)
 		{
 			$this->error=$object->error;
+			$this->errors=array_merge($this->errors, $object->errors);
 			$error++;
 		}