CB Paid Subscriptions

Documentation still shows it's string.

https://learn.quickpay.net/tech-talk/api/callback/#callback

So it might not be the notification, but the response object from /subscriptions or /payments call in the notification handling.

Both /subscriptions and /payments API calls indicate the brand metadata should be a string as well.

https://learn.quickpay.net/tech-talk/api/services/#payments

https://learn.quickpay.net/tech-talk/api/services/#subscriptions

Looks like it's the form return handler. So when redirected back to the site. We're still using QuickPay Form API so maybe an unintended change?

https://learn.quickpay.net/tech-talk/payments/form/#quickpay-form