Troubleshoot two-step checkout

Internal operations

Use this checklist when checkout does not complete after the LinkUp fee, organizer payment, or return step.

Polar checks

• Token is for the correct environment.
• Product ID is for the correct environment.
• Product currency matches checkout currency.
• Product type allows the app-calculated amount.
• Return URL points back to the correct LinkUp environment.

PayPal checks

• Client ID and secret are from the same environment.
• Organizer payment settings are enabled for the event organizer.
• Return and cancel URLs point to the current environment.
• Buyer is using a valid PayPal sandbox or live funding source for that environment.

Order checks

• Order hold has not expired.
• Inventory is still available.
• LinkUp fee status and organizer payment status are both confirmed.
• Ticket was issued after both payment steps completed.