Overview

Initialize a shopping cart for a selected eSIM package and travel dates. The returned cartKey is required to submit the purchase.

When to Use

• Start checkout - After the traveler selects a package and travel window
• Hold a package - Create a short-lived cart before collecting traveler details
• Multi-step flows - Separate package selection from payment/provisioning

What You Get

• Cart key - Opaque cartKey used by submit order

Key Features

• Date-bound: Requires startDate and endDate for the travel period
• Package-scoped: Uses packageId and destinationCode from the catalog
• Idempotent submit later: Reuse the same cartKey safely when submitting