# Concatenate job not submitting

**URL:** <https://help.galaxyproject.org/t/concatenate-job-not-submitting/3006>\
**Category:** usegalaxy.org support\
**Tags:** text-manipulation\
**Created:** [February 19, 2020, 9:55am UTC](https://help.galaxyproject.org/t/concatenate-job-not-submitting/3006 "2020-02-19T09:55:53Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![dadelson](https://sea2.discourse-cdn.com/flex020/user_avatar/help.galaxyproject.org/dadelson/32/1311_2.png) [@dadelson](https://help.galaxyproject.org/u/dadelson)\
**Post date:** [February 19, 2020, 9:55am UTC](https://help.galaxyproject.org/t/concatenate-job-not-submitting/3006/1 "2020-02-19T09:55:53Z")

</div>

When submitting a concatenate job with two bed files as input I get the following text in a pop up and the job does not submit.

The server could not complete the request. Please contact the Galaxy Team if this error persists. Uncaught exception in exposed API method:

{  
“history\_id”: “6150346e5c51054e”,  
“tool\_id”: “toolshed.g2.bx.psu.edu/repos/devteam/concat/gops\_concat\_1/1.0.1”,  
“tool\_version”: “1.0.1”,  
“inputs”: {  
“input1”: {  
“values”: [  
{  
“id”: “bbd44e69cb8906b528408ad2710d2861”,  
“hid”: 12,  
“name”: “Unique CoE containing repeats - Subtract Whole Dataset on data 6 and data 9”,  
“tags”: [],  
“src”: “hda”,  
“keep”: false  
}  
],  
“batch”: false  
},  
“input2”: {  
“values”: [  
{  
“id”: “bbd44e69cb8906b5f5cbd8fb56080eee”,  
“hid”: 11,  
“name”: “Unique Cassette exons containing repeats - Subtract Whole Dataset on data 9 and data 6”,  
“tags”: [],  
“src”: “hda”,  
“keep”: false  
}  
],  
“batch”: false  
},  
“sameformat”: “true”  
}  
}

---

<div class="post-metadata">

**Author:** ![jennaj](https://sea2.discourse-cdn.com/flex020/user_avatar/help.galaxyproject.org/jennaj/32/27_2.png) [@jennaj](https://help.galaxyproject.org/u/jennaj)\
**Post date:** [February 20, 2020, 6:10pm UTC](https://help.galaxyproject.org/t/concatenate-job-not-submitting/3006/2 "2020-02-20T18:10:42Z")

</div>

Welcome, @dadelson

I’m not able to reproduce the problem at Galaxy Main [https://usegalaxy.org](https://usegalaxy.org) using either of the two `Concatenate` tools available (each has slightly different functionality):

- Version you are using **Concatenate datasets** tail-to-head (cat) (Galaxy Version 0.1.0)
- Alternative version **Concatenate datasets** tail-to-head (Galaxy Version 1.0.0)

Please try again. Sometimes when the server is very busy an API error like this one can pop up (temporarily). Also, and this may seem obvious, but expand each input dataset – do they both really contain data lines (produced output – not empty?)

If the problem persists, confirm that this is the server you are actually working at (check the URL) and we can troubleshoot more from there.

Thanks!