Reserved for future payment requirements, such as metered APIs.
Quick facts
When does it occur
Reserved for future payment requirements, such as metered APIs.
It belongs to the 4xx Client Error class of responses, defined in RFC7231#6.5.2.
Browse all codes in this class: 4xx Client Error
Common causes
Frequently asked questions
402 belongs to the 4xx Client Error class and is generally not cached for long; behavior is controlled by Cache-Control.
4xx Client Error: Reserved for future payment requirements, such as metered APIs.
Sources & standards
Updated 2026-08-18
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