ready

Author: AnnaAPak

app/code/Magento/Sales/Test/Mftf/Metadata/InvoiceMeta.xml

@@ -8,7 +8,12 @@
 
 <operations xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="urn:magento:mftf:DataGenerator/etc/dataOperation.xsd">
-    <operation name="CreateInvoice" dataType="Invoice" type="create" auth="adminOauth" url="V1/order/29/invoices" method="POST">
+    <operation name="CreateInvoice" dataType="Invoice" type="create" auth="adminOauth" url="V1/order/{return}/invoice" method="POST">
         <contentType>application/json</contentType>
+         <object key="cartItem" dataType="CartItem">
+            <field key="quote_id">string</field>
+            <field key="sku" type="string">string</field>
+            <field key="qty">integer</field>
+        </object>
     </operation>
 </operations>

app/code/Magento/Sales/Test/Mftf/Test/AdminCreateInvoice.xml

@@ -37,8 +37,9 @@
                 <requiredEntity createDataKey="createGuestCart"/>
             </updateData> 
 
-            <createData entity="Invoice" stepKey="invoiceOrder"/>
-            
+            <createData entity="Invoice" stepKey="invoiceOrder">
+              <requiredEntity createDataKey="createGuestCart"/>
+            </createData>  
 
         </before>
         <after>