FLX-7006: an input document named on the command line does not exist
Family: calibration (the 7000 band)
fluxsim accuracy register --file and fluxsim accuracy score --readout read a JSON document from a path the caller supplies. There is no file at that path -- a typo, a relative path read from a different working directory, or a document that was never written. A file that does not exist has no shape, so this is its own refusal rather than a report about fields: check the path, then re-run the same command. FLX-7005 stays for a document that is there and wrong.
Look it up offline
$ fluxsim explain FLX-7006
Every code is listed in the error index.