Webhook for whatsapp business api client different business manager

Our app already have business_management, whatsapp_business_messaging, whatsapp_business_management approval from facebook. The issue is when we try to subscribe to any business whatsapp number outside our business manager it gives us error of "error_user_title": "App not linked to a Business", "error_user_msg": "Your App is not linked to a Business or the Business doesn't have access to the WhatsApp Business Account.",