cascade delete can not apply to two foreign keys

I have a table that contains two foreign keys of two different tables. I want to build a relationship so that when either primary keys deleted in the two tables, the record in the table should be deleted. But, SQL Server does not allow me to save the relationship, it complains that the circling delete might exist. I do not know why, how can I solve this?

Table A:
ID
ProductID <foreign key>
CustomerID <foreign key
Table Product
ProductID <primary key
Table Customer
CustomerID <primary key
I want to cascade delete the record in Table A when either the ProductID is deleted from Product table or the CustomerID is deleted from Customer table.In my opinion, relying on cascading updates and deletes isn't a good thing to do anyway. I think it's better to handle the deletes in your code when you explicitly want them to happen. I.e., the procedures to delete from either the product or customer table should include a delete statement against Table A. I don't think cascading deletes are a good idea to replace your own logic.