# rescript dereplicate plugin error

**URL:** https://forum.qiime2.org/t/rescript-dereplicate-plugin-error/34049
**Category:** Technical Support
**Created:** [March 9, 2026, 6:09pm UTC](https://forum.qiime2.org/t/rescript-dereplicate-plugin-error/34049 "2026-03-09T18:09:43Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![SoilRotifer](https://forum.qiime2.org/user_avatar/forum.qiime2.org/soilrotifer/32/21071_2.png) [@SoilRotifer](https://forum.qiime2.org/u/SoilRotifer)
#### Post date: [March 9, 2026, 11:40pm UTC](https://forum.qiime2.org/t/rescript-dereplicate-plugin-error/34049/4 "2026-03-09T23:40:06Z")

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> [@pbrannock](#):
>
> I assume they obtained them from the SILVA site and used the same verion of QIIME (qiime2 2024-5) to make the qza files.

I'd suggest not trusting these files. See below.

> [@pbrannock](#):
>
> I do not think your [qiime rescript edit-taxonomy](https://forum.qiime2.org/t/processing-filtering-and-evaluating-the-silva-database-and-other-reference-sequence-data-with-rescript/15494#heading--sixteenth-header) will work for me. I have a problem at first with the silva-138\_2-ssu-nr99-tax.qza having duplicate feature IDs.

There should be no duplicates when running through the RESCRIPt pipeline. I suspect something is very wrong. Again, you can look through the provenance for those files via [QIIME 2 View](https://view.qiime2.org/). You should be able to see what they did to make the QZA files. However, it should not be possible to make a QZA file with duplicate IDs present. Duplicate IDs are checked for during the QZA file generation process. At this stage an error should be raised.

**Solution:**  
There is a work around to make a `138.2` database with your version of QIIME 2. All you need to do is take a more manual approach as outlined in the original tutorial, by clicking the drop-arrow "The gritty details", just under ["Hard mode"](https://forum.qiime2.org/t/processing-filtering-and-evaluating-the-silva-database-and-other-reference-sequence-data-with-rescript/15494#p-63509-getting-silva-data-hard-mode-4). Just `wget` the listed files and run the import commands. (the `rescript get-silva-data` command simply automates these parts for you). Then you are ready to proceed with the rest of the curation pipeline. Skip and choose whichever steps you think appropriate.

FYI, SILVA just recently started to generate some [premade QIIME 2 files](https://www.arb-silva.de/archive/current/QIIME2/). Check those out and see if they work.

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