Errors

Every error response is JSON with a detail field that says what went wrong. The table lists each status and its common causes.

Status	Description
`400`	A parameter is not valid, for example a time zone that does not exist, a bad date, or a date range that is too long.
`401`	The `X-API-Key` header is missing, or the key is not valid.
`404`	The route isn’t available for your account (the user value API is off, or you have no qualifying-request agreement), or the user isn’t found.
`409`	A placement with the same slug is already in your account.
`422`	A required parameter is missing, or a body field or a parameter (for example `days`) is not valid.
`429`	Too many requests. Wait for the number of seconds in the `Retry-After` header, then try again. See Rate limits.