PREFLIGHT CHECK
Check BASE product CSV variation names for duplicates within a product and values longer than 255 characters.
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Check BASE product CSV variation names for duplicates within a product and values longer than 255 characters.
商品ID,種類ID,種類名,種類在庫数 1001,2001,赤,10
BASE variation names have a 255-character limit, but length is only half of the problem. The same variation name cannot be duplicated inside the same product.
A short pair such as “Red / Red” can therefore be invalid even though neither value is long.
Existing products can be grouped by Product ID. New rows have a blank ID, which meant an ID-only checker could miss duplicate variation names across rows of the same new product.
The checker now falls back to product name when Product ID is blank, comparing rows that appear to belong to the same new product.
Existing variation updates depend on Variation ID. Even perfectly unique names can still create the wrong operation if an ID is removed or mismatched.
When IDs are part of the job, run the BASE Product ID / Variation ID checker first.
CSV text alone cannot perfectly distinguish every intentional case, such as deliberately similar product names. Use the result as a way to narrow likely duplicates and compare them with the source data; BASE remains the final authority during import.