The `Source Type` field in the `IC Outbox Transaction` table (ID 414) is currently of type `Option`. We propose changing it to an `Enum` to make it extensible, allowing partners and developers to customize and extend its values as needed.

**Reason for Change:**  

- Using an `Enum` enables extensibility, which aligns with the AL development philosophy.  

- It removes limitations imposed by `Option` fields, improving customization flexibility.  

**Expected Outcome:**  

- Convert the `Source Type` field in table 414 to an `Enum`.  

- Ensure backward compatibility for existing implementations.  

Thank you for considering this enhancement request!