Approuter multitenancy issue

Hi,

I have created an app router and deployed it to CF with the following configuration.

---
applications:
- name: ar-sample-saas-app
  host: ar-sample-saas-app-xxxxxxx
  path: approuter
  buildpack: nodejs_buildpack
  memory: 256M
  env:
    destinations: >
      [
        {"name":"sample-app-destination",
         "url":"https://sample-saas-app-xxxxxxx.cfapps.eu10.hana.ondemand.com",
         "forwardAuthToken": true}
      ]
    TENANT_HOST_PATTERN: "^(.*).eu10.hana.ondemand.com"
  services:
    - sample-saas-app-uaa

But when i try to access its URL i keep getting the following error.

The subdomain does not map to a valid identity zone.

Any suggestions on how to resolve this?

Thanks,

Akshay