TOS-EXT-001An outside serviceA service we rely on did not respond
What happened
Stripe, the postcode lookup, or another external service failed or timed out. Nothing you did caused it.
What to do
Try again shortly. If it persists for more than a few minutes, report it.
This is a service outside TradeOS. Retrying is usually the whole fix.
Quote this code when reporting the problem. It identifies the exact check that failed, which the wording alone does not.