A budget-number id: a non-blank string with no surrounding whitespace (not
trimmed silently, which could hide a copy-paste error), and not a bare G-/F-
prefix (any case), which names no element; the live API answers that with a 503
that would be retried and read as an outage.
A budget-number
id: a non-blank string with no surrounding whitespace (not trimmed silently, which could hide a copy-paste error), and not a bareG-/F-prefix (any case), which names no element; the live API answers that with a 503 that would be retried and read as an outage.