We have been experiencing issues fulfilling sales orders lately.  Some, but not all of the sales ordered submitted produce the error "This sales order cannot be fulfilled because it has a payment hold" upon attempt to fulfill the order.  The catch these customers are not behind on payments, they hold sufficient credit, we have sufficient inventory to fulfill the order and so on.  We cannot find any unique difference between sales orders which produce the error and those which do not.  Also setting the Hold field in the customer record to "No" seems to have no effect.  We tried to