# trim.seqs qual and fasta file seq name mismatch

**URL:** https://forum.mothur.org/t/trim-seqs-qual-and-fasta-file-seq-name-mismatch/2664
**Category:** Commands in mothur
**Created:** [January 19, 2016, 2:24pm UTC](https://forum.mothur.org/t/trim-seqs-qual-and-fasta-file-seq-name-mismatch/2664 "2016-01-19T14:24:41Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![mbainbri](https://avatars.discourse-cdn.com/v4/letter/m/f0a364/32.png) [@mbainbri](https://forum.mothur.org/u/mbainbri)
#### Post date: [January 19, 2016, 2:24pm UTC](https://forum.mothur.org/t/trim-seqs-qual-and-fasta-file-seq-name-mismatch/2664/1 "2016-01-19T14:24:41Z")

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ello,  
When I try to run trim.seqs I get this error:  
mothur \>  
trim.seqs(fasta=PD14\_MC\_DH\_BAC\_rev\_trimmed.txt, maxambig=0,  
qfile=PD14\_BAC\_MC\_DH\_QUAL.qual, qthreshold=35)  
Using 1 processors.  
sequence name mismatch btwn fasta:  
M02542\_125\_000000000-AL0WH\_1\_2110\_2366\_12788 and qual file:  
M02542\_125\_000000000-AL0WH\_1\_1118\_9752\_18458  
This happens even when using my raw fasta and Qual files.  
I am running the latest version of MOTHUR v. 1.36.1

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### Author: ![dwaite](https://avatars.discourse-cdn.com/v4/letter/d/ecccb3/32.png) [@dwaite](https://forum.mothur.org/u/dwaite)
#### Post date: [January 19, 2016, 8:21pm UTC](https://forum.mothur.org/t/trim-seqs-qual-and-fasta-file-seq-name-mismatch/2664/2 "2016-01-19T20:21:15Z")

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The names between your fasta (actually, txt?) file and the qual file are a bit different. That doesn’t necessarily matter, but what sort of pre-processing steps did you perform on these files?