Entity framework relationship parrent children in same table

Question

C++ / C#

table
ID
doc_number
parrent_doc_number
I didn't make the table, I can't change it to refer to id. how to connect them in the model?
so that you can access them
public virtual Payment ParentPayment { get; set; }
public virtual ICollection ChildPayments { get; set; }

Answer 1

What if you try like this?

public class Payment 
    {
            [Key]
           public int doc_number{ get; set; }
    
     public int? parrent_doc_number{ get; set; }
     public virtual Payment parrent { get; set; }
или
 public virtual Payment parrent_ { get; set; }
           public virtual ICollection ChildPayments { get; set; } 
    }

As I remember, EF first looks for the navigation property based on the type name and
if it does not find a match, it looks at the field name and again pk
in both cases it connects the navigation property name and the pk name either together or through an underscore .. .

Answer 2

The whole point is that I wanted to connect not by PK. I did not make the base, it was already like that.