Correcting VAT Return errors

Do I understand right that if you over-reclaimed input VAT (£200) in a previous VAT return, then you would need to adjust the current VAT return by reducing Box 4 figure by £200, correct? And NOT increase Box 1 figure by £200. Just want to confirm I understand correct that input VAT-related errors are adjusted in Box 4 and output VAT-related errors are adjusted in Box 1.

Thank you