Most filters are pick-lists in the app, so rejections mostly happen through the API, the CLI or a pasted value. Three messages cover them.
Company size
Use a company size like 11-200 or 500+.
Sizes are ranges, written either as two numbers with a hyphen or as an open-ended floor. Valid: 1-10, 11-200, 500+. Not valid: 200 on its own, >500, or a word like enterprise.
npx argorant count --industry "software" --size 11-200 --country DEUnknown field
Invalid field:
A filter key was sent that does not exist, usually a plural or a synonym. Check the field list with the CLI reference article or npx argorant count --help before guessing. Field names are stable, so once a call works it keeps working.
Domain validation
Provide a valid company domain, e.g. stripe.com
Enter a valid company domain
Company lookups take a bare domain, not a URL and not a company name. Strip https://, strip www., strip any path. acme.com works, https://www.acme.com/about does not.
Unknown variables
Unknown variables are not allowed:
This one comes from templated fields. Only the variables the field documents are accepted, which prevents a typo silently rendering as an empty string in front of a prospect.
A rejected filter never costs credits and never partially runs. Fix the value and re-send.