# qiime feature-table summarize error
**URL:** https://forum.qiime2.org/t/qiime-feature-table-summarize-error/13364
**Category:** Technical Support
**Created:** [January 28, 2020, 2:41pm UTC](https://forum.qiime2.org/t/qiime-feature-table-summarize-error/13364 "2020-01-28T14:41:53Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@gondry2](https://forum.qiime2.org/u/gondry2)
#### Post date: [January 28, 2020, 2:41pm UTC](https://forum.qiime2.org/t/qiime-feature-table-summarize-error/13364/1 "2020-01-28T14:41:54Z")
Hello,
I have been trying to rerun demultiplexed samples obtained from our sequencing center. I have gotten to the point that I want to visualize my dada2 output, but am receiving an error with my metadata file. I ran a check on keemei and received an error because the sample ids provided had "\_" instead of "-" (Example: Lisa001\_0023-8-5-2015). I tried converting that character, and still have the same problem. I found a similar topic in the forum and made sure that my file was saved in UTF-8 format, but that didn't help. Any insight would be helpful!
Thanks,
Patty
Error reveived:
There was an issue with loading the file Mapping\_file\_012820.csv as metadata:
Found unrecognized ID column name '\ufeffsample-id,barcode-sequence,Diet' while searching for header. The first column name in the header defines the ID column, and must be one of these values:
Case-insensitive: 'feature id', 'feature-id', 'featureid', 'id', 'sample id', 'sample-id', 'sampleid'
Case-sensitive: '#OTU ID', '#OTUID', '#Sample ID', '#SampleID', 'sample\_name'
There may be more errors present in the metadata file. To get a full report, sample/feature metadata files can be validated with Keemei: [https://keemei.qiime2.org](https://keemei.qiime2.org)
Find details on QIIME 2 metadata requirements here: [Metadata in QIIME 2 — QIIME 2 2018.11.0 documentation](https://docs.qiime2.org/2018.11/tutorials/metadata/)
[Mapping\_file\_012820.csv](https://forum.qiime2.org/uploads/short-url/lEWzelVql0Jq6SX6GkP9UalxPOC.csv) (3.2 KB)
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### Author:  [@timanix](https://forum.qiime2.org/u/timanix)
#### Post date: [January 28, 2020, 3:00pm UTC](https://forum.qiime2.org/t/qiime-feature-table-summarize-error/13364/2 "2020-01-28T15:00:12Z")
Hi!
Your metadata file in .csv format. You should convert it to .tsv format first
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### Author:  [@thermokarst](https://forum.qiime2.org/u/thermokarst)
#### Post date: [January 28, 2020, 3:01pm UTC](https://forum.qiime2.org/t/qiime-feature-table-summarize-error/13364/3 "2020-01-28T15:01:10Z")
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### Author:  [@thermokarst](https://forum.qiime2.org/u/thermokarst)
#### Post date: [January 29, 2020, 2:32pm UTC](https://forum.qiime2.org/t/qiime-feature-table-summarize-error/13364/4 "2020-01-29T14:32:53Z")
Hi @gondry2!
> [@gondry2](#):
>
> I ran a check on keemei and received an error because the sample ids provided had “\_” instead of “-”
I just want to mention, QIIME 2 (and Keemei) don't have special requirements for underscores (`_`) vs hyphens (`-`), what matters is that your Sample IDs _match exactly_ between your demuxed sequences/feature table and your sample metadata.
> [@gondry2](#):
>
> Found unrecognized ID column name ‘\ufeffsample-id,barcode-sequence,Diet’ while searching for header.
As @timanix mentioned, this error is because you are using a CSV for metadata, rather than a TSV.
I think it might be helpful for you to spend some time reviewing the Metadata tutorial, this should help steer you in the right direction:
[https://docs.qiime2.org/2019.10/tutorials/metadata/](https://docs.qiime2.org/2019.10/tutorials/metadata/)
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### Author:  [@thermokarst](https://forum.qiime2.org/u/thermokarst)
#### Post date: [January 29, 2020, 2:32pm UTC](https://forum.qiime2.org/t/qiime-feature-table-summarize-error/13364/5 "2020-01-29T14:32:55Z")