PREFLIGHT CHECK

Mercari Shops shipping method code 1–6 checker

Validate Mercari Shops shipping method codes as the documented numeric values 1 through 6.

Check CSV

＋Choose a CSV fileTap/click to choose. Drag and drop also works on desktop.

🔒 Analysis runs in your browser; the file itself is not sent to BlueprintLab.

What this tool checks

Blank shipping method
Values outside 1–6
ASCII digit format

What it cannot determine

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.

How to use this tool

Check that Shipping method is exactly one ASCII digit from 1 to 6 with no surrounding spaces.

Use Try sample to inspect the included sample.
Set ＋ Choose a CSV file Tap/click to choose. Drag and drop also works on desktop..
Use Check CSV to process the input.
Compare the result with your source data and return to the input to make corrections.

＋ Choose a CSV file Tap/click to choose. Drag and drop also works on desktop.: .csv,text/csv

Input and settings example

商品名,配送方法
サンプルTシャツ,3

Shipping method is also an ASCII code from 1 to 6

The current bulk-registration CSV uses 1=unspecified, 2=chilled carrier arranged by seller, 3=Mercari shipping, 4=Mercari chilled, 5=Mercari frozen, and 6=Mercari Biz shipping.

The CSV stores the code rather than the display label.

Codes with surrounding spaces are rejected

A value such as ` 3` can look harmless in a spreadsheet while still containing an ASCII space. The checker now validates the original cell, not a trimmed copy, so only an exact single digit from 1 to 6 passes.

This catches a common copy/paste mistake before upload.

Shipping options can change as the service evolves. Treat the current Mercari Shops template as the source of truth instead of reusing an old code table from a past CSV or article.

A supported code is not automatically the right shipping choice

Food requiring refrigeration or freezing needs an appropriate cool-shipping option. Code 3 can be syntactically valid and still be the wrong operational choice for a product.

This tool validates the code table; product-specific shipping suitability remains a human decision.

Review condition codes separately

Condition is another required 1–6 code, and columns full of similar digits are easy to confuse.

Use the condition-code checker as a separate pass.

Go one step deeper

Five checks before a bulk CSV import →