Limit on number of shipping addresses

Limit on number of shipping addresses

We have some B2B customers whose business partners place orders on us. These orders are billed to the B2B customer, but we will add a shipping address for the business partner who places the order, to whom we ship the order.

In the course of transactions for a customer, we found that only a max 12 shipping addresses are allowed. This has become sort of a stumbling block. We have worked around this by recycling any of the existing shipping addresses. 

Is there any reason this limit is set? Can this be freed up?