PREFLIGHT CHECK
Check standard fulfillment values and validate lowercase-hyphen syntax for custom fulfillment service handles before Shopify CSV import.
🔒 Analysis runs in your browser; the file itself is not sent to BlueprintLab.
| Severity | Row | Column | Issue | Value |
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This unofficial checker covers only rules that can be verified in the browser. Live account settings, remote server state and later service-side validation remain authoritative.
Check standard fulfillment values and the lowercase-hyphen syntax for custom fulfillment service handles.
URL handle,Title,Fulfillment service sample-shirt,Sample Shirt,manual
`Fulfillment service` defaults to `manual`, so the checker no longer treats the absence of the column as a fatal CSV error. It reports a warning because per-row fulfillment assignments cannot be inspected from that file.
When the column exists, the checker validates standard values or the handle form used for a custom fulfillment service.
Shopify documents custom fulfillment service values as lowercase handles: spaces become hyphens and punctuation is removed. For example, `Joan's Fulfillment` becomes `joans-fulfillment`.
The checker validates that handle shape and leaves existence of the service in Shopify admin as a warning-level human check.
This is easy to miss: Shopify states that a variant using a custom fulfillment service cannot have a blank SKU. The checker therefore raises an error when a custom service handle is present but the matching SKU is absent or blank.
A valid-looking service handle is not enough if its related variant data is incomplete.
Fulfillment assignments interact with inventory locations and tracking. If the CSV also changes inventory tracking, use the Shopify Inventory tracker checker as the next pass. This browser tool cannot confirm that a custom service actually exists in your Shopify admin.