Sqlite.net overriding column name when it is indexed

I am getting a response from a json api and deseralizing this into a corresponding object as below and saving the results into sqlite db.

    [Table("Product")]
    public class Fields
    {
        [PrimaryKey]
        public int id { get; set; }
        public string status { get; set; }

        [Indexed]
        [Column("CategoryId")]
         public int category { get; set; }       
 }

in the api, it is called as category but I want to save as CategoryId into my sqlite table.

 var conn = new SQLiteConnection("mydatabase.db3");
                conn.CreateTable<Api.Fields>();

        conn.InsertAll(response);

If I try to create table no problem, it gets created with CategoryId but when I try to insert results, it will complain with the message below,

SQLite.SQLiteException was unhandled by user code
HResult=-2146233088 Message=Constraint Source=SQLite-net
StackTrace: at SQLite.PreparedSqlLiteInsertCommand.ExecuteNonQuery(Object[] source) at SQLite.SQLiteConnection.Insert(Object obj, String extra, Type objType) at SQLite.SQLiteConnection.Insert(Object obj)

How can I set that mapping? I see there are some overloads like getmappings or tablemappings but I cant find any usage or syntax information how to use it?