Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE Draft_Copies (document_id VARCHAR, copy_number VARCHAR)

### Question ###
Which document has the most draft copies? List its document id and number of draft copies.

### Accurate SQL ###

SELECT document_id, COUNT(copy_number) FROM Draft_Copies GROUP BY document_id ORDER BY COUNT(copy_number) DESC LIMIT 1