keyword

what does invalid transaction mean on a card machine

Monthly search volume and cost-per-click data for "what does invalid transaction mean on a card machine" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=what+does+invalid+transaction+mean+on+a+card+machine&country=us" +--------------+------------------+ | volume | 30 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-08-29 | +--------------+------------------+

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
debit not available code 12	210	$0	10/20
invalid transaction	210	$0	9/20
debit code 12	90	$0	10/20
decline code 12	70	$0	11/20
12 invalid transaction	40	$0	11/20
declined 12	40	$0	11/20
invalid transaction 12	40	$0	11/20
invalid txn for card	40	$0	11/20
decline 12	40	$0	10/20
invalid tran type	20	$0	10/20

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=what+does+invalid+transaction+mean+on+a+card+machine&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