! This endpoint is experimental and unstable. The API contract may change without notice.
Creates a request to check if a specific product variant combination is in stock. Returns immediately with a request ID that can be used to poll for results.
Optional end-user identifier for tracking purposes
Product details to check variant availability for
Request accepted and processing started. Use the requestId to poll for results.
^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000)$pending, processing