> For the complete documentation index, see [llms.txt](https://6dot50.gitbook.io/6dot50-apis/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://6dot50.gitbook.io/6dot50-apis/initiate-payment.md).

# Initiate Payment

Before redirecting to the 6DOT50 Secure User Payment pages, the Merchant must request a unique Payment ID. 

This is done by posting transaction details to the Redemptions API, upon which it will respond with a unique Payment ID for the transaction.