diff --git a/htdocs/core/class/commonobject.class.php b/htdocs/core/class/commonobject.class.php
index dea6bdf60ad..d2853d48034 100644
--- a/htdocs/core/class/commonobject.class.php
+++ b/htdocs/core/class/commonobject.class.php
@@ -5493,6 +5493,7 @@ abstract class CommonObject
 			   		$mandatorypb = false;
 			   		if ($attributeType == 'link' && $this->array_options[$key] == '-1') $mandatorypb = true;
 			   		if ($this->array_options[$key] === '') $mandatorypb = true;
+					if ($attributeType == 'sellist' && $this->array_options[$key] == '0') $mandatorypb = true;
 			   		if ($mandatorypb)
 			   		{
 			   		    dol_syslog("Mandatory extra field ".$key." is empty");
diff --git a/htdocs/core/class/extrafields.class.php b/htdocs/core/class/extrafields.class.php
index 4b6f43bd06e..9d479e31f6c 100644
--- a/htdocs/core/class/extrafields.class.php
+++ b/htdocs/core/class/extrafields.class.php
@@ -2058,9 +2058,12 @@ class ExtraFields
 
 				if ($this->attributes[$object->table_element]['required'][$key])	// Value is required
 				{
-					// Check if empty without using GETPOST, value can be alpha, int, array, etc...
+					// check if functionally empty without using GETPOST (depending on the type of extrafield, a
+					// technically non-empty value may be treated as empty functionally).
+					// value can be alpha, int, array, etc...
 				    if ((!is_array($_POST["options_".$key]) && empty($_POST["options_".$key]) && $this->attributes[$object->table_element]['type'][$key] != 'select' && $_POST["options_".$key] != '0')
 				        || (!is_array($_POST["options_".$key]) && empty($_POST["options_".$key]) && $this->attributes[$object->table_element]['type'][$key] == 'select')
+				        || (!is_array($_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'][$key];
diff --git a/htdocs/fourn/class/fournisseur.commande.class.php b/htdocs/fourn/class/fournisseur.commande.class.php
index 123b1eb0046..d7af9b46470 100644
--- a/htdocs/fourn/class/fournisseur.commande.class.php
+++ b/htdocs/fourn/class/fournisseur.commande.class.php
@@ -3234,6 +3234,7 @@ class CommandeFournisseur extends CommonOrder
     		{
     			if (is_array($supplierorderdispatch->lines) && count($supplierorderdispatch->lines) > 0)
     			{
+					require_once DOL_DOCUMENT_ROOT.'/htdocs/product/class/product.class.php';
     				$date_liv = dol_now();
 
     				// Build array with quantity deliverd by product
@@ -3241,7 +3242,11 @@ class CommandeFournisseur extends CommonOrder
     					$qtydelivered[$line->fk_product] += $line->qty;
     				}
     				foreach ($this->lines as $line) {
-    					$qtywished[$line->fk_product] += $line->qty;
+						if ($line->product_type == Product::TYPE_PRODUCT ||
+							($line->product_type == Product::TYPE_SERVICE && !empty($conf->global->STOCK_SUPPORTS_SERVICES))
+						) {
+							$qtywished[$line->fk_product] += $line->qty;
+						}
     				}
     				//Compare array
     				$diff_array = array_diff_assoc($qtydelivered, $qtywished); // Warning: $diff_array is done only on common keys.