You are wrong ... the IP PIN they sent you in Jan of 2023 is to be used on ALL tax returns you file in 2023 for any and all tax years. So if you are filing the 2022 return or any other prior year you must use the 2023 IP PIN they just issued to you. And next January of 2024 you will get a new number to use on any and all returns you file in 2024.
