# Issuing API (v4) Migration Guide
When migrating your Issuing client application from v3 to v4 of the Issuing API the following changes should be considered:
# Products
When requesting product information, a new property pricingEngine
in the response will show the pricing engine that is
used to perform the fare calculation with /v4/journey/price
. The pricingEngine
will not be present in the response
for a product with no pricing engine.
# Journeys
/v4/journey/price
is a new endpoint available on (v4). The endpoint can be used to perform fare calculation on a planned route. The endpoint can only be used on products with a definition that are of type station-to-station and pricing engineAccept Institute
. A propertyvalidUntil
in the response will indicate the expiry time of the price for the given journey./v4/journey/create
is a new endpoint available on (v4). The endpoint can be used to create a ticket from a priced journey. The response from endpoint/v4/journey/price
is used as request to this endpoint. The authenticity of the request will be validated against thesignature
value. The issued ticket will be valid for a full day on the planned day of travel, including extended business hours.