Need to dispatch items according to payment received from customer

Summary:

In our scenario, We are receiving advance from customer but not in full amount let's say we have 50% of the total sales order value then we should restrict system such that we should only be able to dispatch 50% of the goods only

How can this be achieved?

Content (please ensure you mask any confidential information):

In our scenario, We are receiving advance from customer but not in full amount let's say we have 50% of the total sales order value then we should restrict system such that we should only be able to dispatch 50% of the goods only

How can this be achieved?