Why an API Order ID Alone Should Not Count as Integration Success

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A Shopify-FileMaker integration test revealed that receiving an order ID from an API call does not confirm a successful order creation. In a controlled 10-product test, a verified workflow staged all 10 line items, preserved product categories and images, and created matching downstream records. A separate tracking run confirmed 29 of 29 required records were created, with a second pass finding zero outstanding records. Earlier instances where phantom successes were falsely logged as completed orders were reclassified as failures. The findings advocate a five-step verification pattern — receive, map, validate, convert, and read back — rather than assuming success after a single POST request.

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