How to validate bill to and ship to address of a customer before sales order creation

We have a requirement to validate bill to and shipto address before creating a sales order.

Customer number is received from upstream system and is being mapped to Orig_System_Reference in Fusion. We need to first validate if the customer exists using the external customer number and then validate it's bill to and ship to addresses.

Need inputs if there is any api that can be leveraged to validate customer using Orig_System_Reference and validate corresponding bill to and shipto addresses.