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Flexible Service

This means that if there was a mistake — for example:

• in the vehicle’s license plate number,
• in the country of registration,
• or in the vignette start date

it will not be possible to make any changes.

Flex Service comes in two plans, selected per product via flex.type:

Plan	Price	What it allows
default	€3.29	Changes to an upcoming vignette up to 6 hours before the start time, i.e. until 18:00 on the previous day.
expanded	€5.99	Changes to an already active vignette, at any point during its validity period.

• Orders with Flex Service are processed separately, as they are sorted into a dedicated group.

This gives users extra flexibility in case they need to correct details such as license plate number, country of registration, or vignette start date.

Example payload for an order with Flex Service:

Code
{
"order_has_been_paid": false,
...
"products": [
    {
        "name": "vignette-si-2a",
        ...
        "flex": {
            "type": "default",
            "enabled": true
        }
    }
  ]
}

type selects the plan (default or expanded), enabled confirms that the partner accepted and processed Flex Service for this product.

Refunds

Flex Service also makes a paid order refundable. Orders without Flex can never be refunded.

The refund is calculated on the vignette price alone — it excludes the Flex fee (that is what paid for the refund right) and any insurance. So a €19.44 order made of a €15.45 vignette plus €3.99 Flex refunds €15.45, never €19.44.

Refund tiers

How much is refunded depends on how much time remains before the vignette start (start_from). The tiers are mutually exclusive — at most one applies at a time:

Tier	When	Refund
Full refund	More than 6 hours before start	100% of the vignette price
Partial refund	5–6 hours before start	50% of the vignette price
Same-day	Vignette bought today to start today, within 1 hour of purchase	50% of the vignette price

Less than 5 hours before start, no refund is available.

How the windows decay

Both the modify and refund windows close as the start time approaches. For a default Flex order:

Capability	Open while	Closes at
Modify · default	More than ~6 hours before start	modify.expires_at
Modify · expanded	Until the vignette expires	end of the vignette's last valid day
Full refund · 100%	6h+ before start	full_refund.expires_at
Partial refund · 50%	5–6h before start	partial_refund.expires_at
Partial refund · 50% (same-day)	Bought today to start today, within 1h of purchase	purchase time + 1h

expanded Flex keeps the modify window open until the vignette expires; it does not change the refund terms.

Read the capability blocks — don't compute

Every order response (Get Order and the list endpoints) carries three blocks — modify, full_refund, partial_refund — that tell you exactly what is possible right now, until when, and for how much:

Code
"full_refund": {
    "eligible": true,
    "available_at": null,
    "expires_at": 1785907061,
    "amount_eur": 15.45,
    "percent": 100,
    "reason_code": "more_than_6h_before_start"
}

• Render amount_eur verbatim — never recompute it. percent is display-only; do not multiply anything by it.
• Trust expires_at over your own clock arithmetic — it is the authoritative value the server enforces (the modify window in particular closes on a truncated whole-hour comparison, so it can be up to an hour earlier than the "6 hours" rule of thumb suggests).
• A pending tier still reports its terms: when partial_refund is ineligible only because the 100% tier is currently live (reason_code: full_refund_applies), it still tells you what it will pay (amount_eur) and when it opens (available_at — exactly full_refund.expires_at). That is how you show "€15.45 now, or €7.73 after 05 Aug 05:14".
• Re-read the order immediately before executing a modify or refund — these values are time-volatile and a list fetched minutes ago may have crossed a tier boundary.