I sell on Amazon and used the industry code 454111 but it keeps saying it is invalid and won't let me file my return

For 2022 you must now choose codes based on what you are selling.

Some examples are:

Avon: 456120 - Cosmetics, beauty supplies and perfume retailers https://bit.ly/3F0tDM2

Discovery Toys: 459120 - Hobby, toy and game retailers https://bit.ly/3ZmkMw5

Epicure: 445298 - All other specialty food retailers https://bit.ly/3miWiW0 

Isagenix: 456191 - Food (health) supplement retailers https://bit.ly/3SQSbNa

Pampered Chef: 449129 - All other home furnishing retailers https://bit.ly/3SRZcNB

Scentsy: 459999 - All other miscellaneous retailers. https://bit.ly/3YvS37b

Thirty-One Gifts: 458320 - Luggage and leather goods retailers https://bit.ly/3SUGCED

If you need to find a code that's not listed in the examples, please visit the NAICS website here: https://www23.statcan.gc.ca/imdb/p3VD.pl?Function=getVD&TVD=1369825