Why is my inventory not reducing after order fulfillment?

Topic summary

  • Core issue: Inventory did not decrease after an order was placed and fulfilled for a one-of-a-kind product. The merchant had both “Available Quantity” and “On Hand” set to 1, yet the product still shows 1 available post-fulfillment.

  • Context: Items are unique, single-quantity listings. “Available Quantity” and “On Hand” are inventory fields that typically decrement when a sale is processed and fulfilled.

  • Latest update: A respondent requested the store URL to investigate further. No diagnostic steps, settings checks, or hypotheses have been provided in the thread yet.

  • Status: Unresolved and ongoing. No root cause identified.

  • Open questions: Why didn’t the inventory reduce after fulfillment? Are there store-specific settings or configuration details affecting inventory updates? No screenshots, logs, or attachments were shared.

Summarized with AI on January 11. AI used: gpt-5.

I have each of my products set with an Available Quantity and On Hand of 1 because most of my items are one-of-a-kind. A customer just order 1 of an item, but the quantity did not reduce even once I fulfilled the order. It still is showing that 1 is available. WHY?

hello

please share your Store url