httpCode

For Application Load Balancers, you can specify values between 200 and 499, with the default value being 200. You can specify multiple values (for example, "200,202") or a range of values (for example, "200-299").

For Network Load Balancers, you can specify values between 200 and 599, with the default value being 200-399. You can specify multiple values (for example, "200,202") or a range of values (for example, "200-299").

For Gateway Load Balancers, this must be "200–399".

Note that when using shorthand syntax, some values such as commas need to be escaped.