"No data was retrieved" Message for the Item while creating Sales Order

Summary

"No data was retrieved" Message for the Item while creating Sales Order

Content

Hi Team,

I have created a Customer Orchestration (Having OTM Step as the step after reservation), and created new Item, however the Item is not being Identified by GOP - Basically Review Supply Availability is having "No data Found" and when creating Sales Order , it shows "No data was retrieved" and upon Submission it gets stuck with Error Message : 

The item passed to order promising was not found in any organization. Verify the item definition. (DOO-2685268)

Steps followed until now:

1. Custom Orchestration Process Created
2. Created New Order Type