SQLPLUS -ORA-00984 Coumn no allowed here

Im new to Oracle SQLPLUS and I keep getting this error. The code is:

INSERT INTO customer
(cust_no,cust_name,cust_add_1,cust_add_2,cust_add_city,cust_add_county,cust _postcode,cust_credit)values (&customer_number, &customer_name,
&customer_Address_line_1,&Customer_Address_line_2,&Customer_city,
&Customer_County, &customer_postcode, &Customer_credit);

Firstly, I get a comma missing message on cust_name, after the space. Then I retry, removing the space and then I get the ORA-00984 error message

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