There was no way for the user to figure out if the Shopify store was integrated into a different location.
For example, X has 2 locations and has integrated a Shopify store into 1. Now he wants to integrate the same store to another location, this won’t be possible as the store has already been connected with a different location.
Solution
On entering the Access token and Shopify store name if the store is already integrated, the user will get an option to remove the same and re-integrate to the required location.