Zone based Sourcing Rule not working

Summary:

We are trying to Setup Sourcing Rules based on Zone based & upon creation of Sales order we are getting Scheduling error.

Content (required):

Setup done:

1) Created a Zone called Eastern Zone (Bounded by Country & Zone creation allowed by State)

2) Associated Geography: Florida

3) Geography Validation enabled for State & ESS process "Validate Geographies Geographies of Addresses Against Master" was ran & completed without error.

4) defined Transit time between WH internal location to Zone

5) Ran Collection Process

6) created a Global Sourcing Rule & Assigned it at Region Level and selected Zone as Eastern Zone.

Now when trying to create a SO for Customer whose ship-to Address is in State of Florida, Order gets into scheduling Error. Kindly let us know if any setup is missed & also helps us understand the cause of the error