Customer master Load

Hi Experts,

what is the best process to load Customer master to SAP ?

as there is a dependency on Partners, so first we need to load the partners then the customers.

Like if we have 10 customers to load, they may have 25 partners, these 25 partners may have again 10 partners and so on.

this is a iterative Process.

is there any other efficient way to load this customer master?

Thanks