# Metadata preparation and rarefaction level

**URL:** https://forum.qiime2.org/t/metadata-preparation-and-rarefaction-level/3913
**Category:** User Support
**Created:** [April 25, 2018, 1:54am UTC](https://forum.qiime2.org/t/metadata-preparation-and-rarefaction-level/3913 "2018-04-25T01:54:45Z")
**Posts on this page:** 1
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### Author: ![thermokarst](https://forum.qiime2.org/letter_avatar_proxy/v4/letter/t/8e7dd6/32.png) [@thermokarst](https://forum.qiime2.org/u/thermokarst)
#### Post date: [April 25, 2018, 12:43pm UTC](https://forum.qiime2.org/t/metadata-preparation-and-rarefaction-level/3913/3 "2018-04-25T12:43:29Z")

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Thanks so much for the info, @MMC_northS!

> [@MMC\_northS](#):
>
> must have the columns #SampleID BarcodeSequence LinkerPrimerSequence and Description

I just want to point out here that those column requirements are from QIIME 1, and are not required columns in QIIME 2 (QIIME 2 has no column requirements at all, besides the index column, which should be your sample IDs or feature IDs). Thanks, and keep on QIIMEing! 🦖

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