PROBLEM TYPE · INVALID_GTIN

That is not a valid GTIN

The request was refused before anything changed.

Status
400
Code
INVALID_GTIN
Type
https://packagepage.com/problems/invalid-gtin

What this means

A GTIN is 8, 12, 13 or 14 digits. This value is not shaped like one, so there is no single correction to offer: we cannot tell what it was meant to be.

Why it usually happens

Almost always a spreadsheet. A long number stored as a number comes back as 8.71E+12, and a leading zero disappears on the way out of the column.

What to do

Format the column as text before you export, then send the value again. Compare it against the digits printed on the pack rather than against the spreadsheet — the pack is the one that has to scan.