# Adding qiime2 taxonomy data to a .biom file
**URL:** https://forum.qiime2.org/t/adding-qiime2-taxonomy-data-to-a-biom-file/1516
**Category:** User Support
**Tags:** taxonomy, biom, export
**Created:** [October 16, 2017, 4:59pm UTC](https://forum.qiime2.org/t/adding-qiime2-taxonomy-data-to-a-biom-file/1516 "2017-10-16T16:59:18Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@mc92](https://forum.qiime2.org/u/mc92)
#### Post date: [October 16, 2017, 4:59pm UTC](https://forum.qiime2.org/t/adding-qiime2-taxonomy-data-to-a-biom-file/1516/1 "2017-10-16T16:59:18Z")
Hello!
I've been trying these steps in order to import the biom file to Qiime1 and summarize the taxa barplot by categories. The export parts worked fine, I think, but when trying to add the metadata values to the biom file this error is returned:
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> biom.exception.BiomParseException: No header line was found in mapping file.
\_
I have changed the biom-taxonomy.tsv file header line in order to reproduce what you wrote on your answer, like this:
> #OTUID taxonomy confidence
This way, when running the code line, the error I reproduced before appears:
> biom add-metadata -i exported/feature-table.biom -o table-with-taxonomy.biom --observation-metadata-fp biom-taxonomy.tsv --sc-separated taxonomy
Do you know where the error could be? Maybe with the table.qza file I am using? I tried using the table file obtained after the trimming step, maybe I should use another one?
Thank you very much in advance!
Marc
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### Author:  [@jairideout](https://forum.qiime2.org/u/jairideout)
#### Post date: [October 16, 2017, 11:33pm UTC](https://forum.qiime2.org/t/adding-qiime2-taxonomy-data-to-a-biom-file/1516/3 "2017-10-16T23:33:24Z")
Hi @mc92! Can you double-check that `#OTUID`, `taxonomy`, and `confidence` are separated by tab characters instead of spaces? If that doesn't work, can you send me the `biom-taxonomy.tsv` file so I can take a look?
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### Author:  [@mc92](https://forum.qiime2.org/u/mc92)
#### Post date: [October 17, 2017, 4:35pm UTC](https://forum.qiime2.org/t/adding-qiime2-taxonomy-data-to-a-biom-file/1516/5 "2017-10-17T16:35:07Z")
Hey!
I tried writting the header line from zero and now it worked, so I assume I had some space I didn't see previously.
Thanks!
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### Author:  [@system](https://forum.qiime2.org/u/system)
#### Post date: [November 17, 2017, 10:35pm UTC](https://forum.qiime2.org/t/adding-qiime2-taxonomy-data-to-a-biom-file/1516/6 "2017-11-17T22:35:21Z")
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