обновлена версия Guzzle + для сущности Demand name не обязателен

composer.json

@@ -2,8 +2,8 @@
     "name": "tooyz/moysklad",
     "description": "Get it here: https://github.com/Tooyz/moysklad",
     "require": {
-        "php": ">=7.0",
-        "guzzlehttp/guzzle": "^6.2.1"
+        "php": ">=7.2",
+        "guzzlehttp/guzzle": "^7.0.1"
     },
     "authors": [
         {

src/Components/MutationBuilders/AbstractMutationBuilder.php

@@ -77,6 +77,24 @@ public function __construct(AbstractEntity &$entity){
         $this->e = $entity;
     }
 
+    public function addOperation($linkedSum, AbstractEntity $entity)
+    {
+        $this->e->fields->operations = [
+            [
+                'meta' => $entity->getMeta(),
+                'linkedSum' => $linkedSum * 100
+            ]
+        ];
+
+        return $this;
+    }
+
+    public function setSum($sum)
+    {
+        $this->e->fields->sum = $sum * 100;
+        return $this;
+    }
+
     /**
      * @param Account $account
      * @param LinkingSpecs|null $specs

src/Entities/Documents/Movements/Demand.php

@@ -2,6 +2,14 @@
 
 namespace MoySklad\Entities\Documents\Movements;
 
+use MoySklad\Entities\Organization;
+use MoySklad\Entities\Store;
+
 class Demand extends AbstractMovement {
     public static $entityName = 'demand';
+
+    public static function getFieldsRequiredForCreation()
+    {
+        return ['agent', Organization::$entityName, Store::$entityName];
+    }
 }