Batch prevention in sales/shipping

Hi

We want to achieve a scenario where only a certain batch can be sold and shipped to a specific customer.

The scenario is about the following:

Material A is existing in stock in 2 different batches 001 and 002.

Batch 001 can only be sold and shipped to customer 1 and batch 002 to customer 2.

My questions is related to:

How do we prevent ATP check at the time of sales order and delivery to give availability on "wrong" batches? Any user exit suggestion or any other logic is warmly appreciated.

How to prevent goods issue if the batch is not approved for the customer?

Is there any SAP best practices existing for these kind of scenario?

Thanks in advance,

Lars