Use strict membership.

master/bt5/vifib_open_trade/SkinTemplateItem/portal_skins/vifib_open_trade/Delivery_isDestinationSectionAllowedToRequest.xml

@@ -56,7 +56,7 @@ section_uid = context.getSourceSectionUid()\n
 customer_uid = context.getDestinationSectionUid()\n
 simulation_state = context.getPortalCurrentInventoryStateList() + context.getPortalTransitInventoryStateList()\n
 balance = context.portal_simulation.getInventoryAssetPrice(\n
-  node_category=\'account_type/asset/receivable\',\n
+  node_category_strict_membership=\'account_type/asset/receivable\',\n
   simulation_state=simulation_state,\n
   section_uid=section_uid,\n
   mirror_section_uid=customer_uid)\n

master/bt5/vifib_open_trade/bt/revision

-157
\ No newline at end of file
+158
\ No newline at end of file