“Reference number” in Japanese
Short answer
Reference number in Japanese is “整理番号” (seiribangou). Full meaning: reference number, serial number.
Other ways to say “Reference number” in Japanese
問い合わせ番号
toiawasebangou reference number, order number, tracking number
お問い合わせ番号
otoiawasebangou reference number, order number, tracking number
予約番号
yoyakubangou confirmation number, reservation number, reference number
商品番号
shouhinbangou item number, product ID number, reference number
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