keyword

invalid card no 204

Monthly search volume and cost-per-click data for "invalid card no 204" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=invalid+card+no+204&country=us" +--------------+------------------+ | volume | 70 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-26 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
declined auth declined 200	170	$0	7/20
auth declined 200	170	$0	6/20
authorization declined 200	170	$0	6/20
request denied 218	140	$0	7/20
decline code 200	40	$0	6/20
invalid term id 309	40	$0	6/20
transaction not approved 530	30	$0	7/20
code 201 credit card	30	$0	6/20
decline 200	30	$0	6/20
declined 200	30	$0	6/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=invalid+card+no+204&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt