Delivery Status Update for Unfulfilled Orders

[RohithBasupally]

• I need support for the below case.
  I am creating orders on Shopify (via dashboard and online store) and have a webhook installed on the order creation event. Our app Tookan is also installed on the same store. I need to know how I can manage delivery status updates for the unfulfilled orders via my app.
  
  I have attached the screenshots about how my app clients want it to be shown on Shopify. 
  
  
  This is very urgent as I have not been able to get the query resolved via Shopify help centre and they redirected me here.
  
  
  I was advised to use orderUpdate mutation on Shopify which I tried but there was no update in the order and I also received this error from my store when I installed the app on my shopify store.