How to create transfer order for an model item manually?

Summary: How to create transfer order for an model item manually

Content (required):

1. Define CTO item with Item Structure type as Model and Assemble to Order as 'Yes'

2. Define Primary Structure

3. Assign Model item to child organizations

4. Define OM related setups (Pricing, ATP,Sourcing etc.)

5. Create Sales order leads to creation of back to back transfer order via orchestration (B2B transfer order between OrgX to OrgY is getting created successfully via DOO orchestration)

6. Create Manual transfer of the same Star model between same orgs (OrgX to OrgY): Not able to create transfer order as not able to select supply organization.