keyword

51 : declined

Monthly search volume and cost-per-click data for "51 : declined" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=51+:+declined&country=us" +--------------+------------------+ | volume | 30 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-08-30 | +--------------+------------------+

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 card declined reason 51	40	$0	10/20
debit declined reason 51	40	$0	10/20
51 declined	30	$0	20/20
payment declined reason 51	30	$0	10/20
what is reason 51 for payment declined	30	$0	9/20
debit not approved code 51	20	$0	13/20
transaction not approved	20	$0	10/20
credit card reject codes	20	$0	9/20
decline reason codes	20	$0	9/20
what does restraint mean on a credit card	20	$0	9/20

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=51+:+declined&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