> For the complete documentation index, see [llms.txt](https://knowledge-base.zumrails.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge-base.zumrails.com/transactions-and-payment-methods/why-did-my-transaction-fail.md).

# Why did my transaction fail?

> There are many reasons why your transaction could have failed.

The most common reason is due to NSF; other possibilities include the lack of email addresses, phone numbers, security questions, etc.

Please refer to our documentation under **Transaction**, then under **Status and Events** to reference all possible event statuses, or click on the button below:

Most transactions will fail within 2-3 days of the transaction initiation, but banking regulations allow for failures to occur even beyond this point.