# q2-dada2 FeatureData\[LinkedSequence\]

**URL:** https://forum.qiime2.org/t/q2-dada2-featuredata-linkedsequence/34375
**Category:** Technical Support
**Tags:** dada2
**Created:** [November 4, 2026, 11:17am UTC](https://forum.qiime2.org/t/q2-dada2-featuredata-linkedsequence/34375 "2026-11-04T11:17:26Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![arwqiime](https://forum.qiime2.org/user_avatar/forum.qiime2.org/arwqiime/32/12728_2.png) [@arwqiime](https://forum.qiime2.org/u/arwqiime)
#### Post date: [November 4, 2026, 11:17am UTC](https://forum.qiime2.org/t/q2-dada2-featuredata-linkedsequence/34375/1 "2026-11-04T11:17:26Z")

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(topic deleted by author)

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### Author: ![arwqiime](https://forum.qiime2.org/user_avatar/forum.qiime2.org/arwqiime/32/12728_2.png) [@arwqiime](https://forum.qiime2.org/u/arwqiime)
#### Post date: [November 4, 2026, 12:53pm UTC](https://forum.qiime2.org/t/q2-dada2-featuredata-linkedsequence/34375/2 "2026-11-04T12:53:40Z")

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Hello,

@Macabe222

I have realized that the FeatureData[LinkedSeqeunce] issue has been resolved for several plugins in q2-2026.10 release. Thank you!

There is one additional plugin option, that I found incompatible with this new type:

`qiime quality-control decontam-score-viz --i-rep-seqs` seems to be affected, also this input is optional (no error when omitting `--i-re-seqs`)

`Invalid value for '--i-rep-seqs': Expected an artifact of at least type`  
`FeatureData[Sequence]. An artifact of type FeatureData[LinkedSequence] was`  
`provided.`

Best

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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: [November 5, 2026, 7:35am UTC](https://forum.qiime2.org/t/q2-dada2-featuredata-linkedsequence/34375/3 "2026-11-05T07:35:17Z")

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Hi @arwqiime ,  
Thanks for giving the new `FeatureData[LinkedSequence]` type a spin!

I have opened an issue to add this as an acceptable type to `decontam-score-viz`. You can follow this issue to track status of this feature request:

> <https://github.com/qiime2/q2-quality-control/issues/105>
>
> \*\*Addition Description\*\*
> Accept \`FeatureData\[LinkedSeqeunce\]\` as an acceptable i…nput type for the \`rep\_seqs\` input of \`decontam-score-viz\`
> 
> \*\*Current Behavior\*\*
> \`FeatureData\[LinkedSeqeunce\]\` is not a valid input to \`decontam-score-viz\`
> 
> \*\*Proposed Behavior\*\*
> Add \`FeatureData\[LinkedSeqeunce\]\` to the list of acceptable input types for \`rep\_seqs\`
> 
> \*\*Questions\*\*
> 1. Will this action choke on any whitespace chars in the linked sequences? I have not looked yet to see how the rep-seqs are handled in this action.
> 
> \*\*References\*\*
> \[Requested via a forum user\](https://forum.qiime2.org/t/q2-dada2-featuredata-linkedsequence/34375/2?u=nicholas\_bokulich)