unsupported_api_version
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Unsupported API version: HTTP 400.
HTTP 400 · Unsupported API version
MeaningLink to this section
The Api-Version header names a date that isn't one of the versions served.
FixLink to this section
Send one of the versions the reference lists, or omit the header to use the current version.
RetryLink to this section
The same call fails again until something changes.