# Demux error, barcode orientation

**URL:** <https://forum.qiime2.org/t/demux-error-barcode-orientation/3364>\
**Category:** User Support\
**Tags:** demux\
**Created:** [March 8, 2018, 2:47pm UTC](https://forum.qiime2.org/t/demux-error-barcode-orientation/3364 "2018-03-08T14:47:54Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Nicholas\_Bokulich](https://forum.qiime2.org/user_avatar/forum.qiime2.org/nicholas_bokulich/32/19937_2.png) [@Nicholas\_Bokulich](https://forum.qiime2.org/u/Nicholas_Bokulich)\
**Post date:** [March 8, 2018, 2:58pm UTC](https://forum.qiime2.org/t/demux-error-barcode-orientation/3364/2 "2018-03-08T14:58:17Z")

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Hi @mcevasco,  
Check out [this forum post](https://forum.qiime2.org/t/demux-quits-with-plugin-error-no-sequences-mapped/1269/3) it sounds like that user had the same trouble and they simply mixed up their seq/barcode files when importing. Check that and let us know!

I hope that helps!

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_[View the full topic](https://forum.qiime2.org/t/demux-error-barcode-orientation/3364)._