# Number of fields exceeded error

**URL:** <https://cms-helpdesk.ncas.ac.uk/t/number-of-fields-exceeded-error/230>\
**Category:** Unified Model\
**Tags:** ARCHER2\
**Created:** [27 September 2021 09:57 UTC](https://cms-helpdesk.ncas.ac.uk/t/number-of-fields-exceeded-error/230 "2021-09-27T09:57:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![dgaleareading](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/dgaleareading/32/30_2.png) [@dgaleareading](https://cms-helpdesk.ncas.ac.uk/u/dgaleareading)\
**Post date:** [27 September 2021 09:57 UTC](https://cms-helpdesk.ncas.ac.uk/t/number-of-fields-exceeded-error/230/1 "2021-09-27T09:57:26Z")

</div>

Hi,

I am running an N512 run of the UM on ARCHER2 but it has failed after two simulated years with:

```auto
????????????????????????????????????????????????????????????????????????????????
???!!!???!!!???!!!???!!!???!!! ERROR ???!!!???!!!???!!!???!!!???!!!
? Error code: 4
? Error from routine: STWORK
? Error message: STWORK: Number of fields exceeds reserved headers for unit 19
? Error from processor: 520
? Error number: 37
????????????????????????????????????????????????????????????????????????????????

```

I have been trying to get which stream this points to so as to change reinit\_step (following the instructions given in the UM practicals from the introductory course), but I haven’t managed to find the stream in the job.out file. Would you be able to help?

Regards,  
Daniel

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<div class="post-metadata">

**Author:** ![grenville](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/grenville/32/29_2.png) [@grenville](https://cms-helpdesk.ncas.ac.uk/u/grenville)\
**Post date:** [27 September 2021 11:46 UTC](https://cms-helpdesk.ncas.ac.uk/t/number-of-fields-exceeded-error/230/2 "2021-09-27T11:46:47Z")

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Daniel  
Check in `/work/n02/n02/dangalea/cylc-run/u-cg647/work/19900601T0000Z/atmos_main/pe_output/cg647.fort6.pe0000`

Looks like

```auto
FILE_MANAGER: Assigned : /work/n02/n02/dangalea/cylc-run/u-cg647/share/data/History_Data/cg647a.ph1990jun
FILE_MANAGER: : id : pp7
FILE_MANAGER: : Unit : 19 (portio)

Grenville

```

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<div class="post-metadata">

**Author:** ![dgaleareading](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/dgaleareading/32/30_2.png) [@dgaleareading](https://cms-helpdesk.ncas.ac.uk/u/dgaleareading)\
**Post date:** [27 September 2021 12:03 UTC](https://cms-helpdesk.ncas.ac.uk/t/number-of-fields-exceeded-error/230/3 "2021-09-27T12:03:19Z")

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Hi,

thanks for your help. I’ve reloaded the suite with a new reinit\_step and re-triggered the atmos\_main task. Hopefully the change works.

Regards,  
Daniel

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<div class="post-metadata">

**Author:** ![RosalynHatcher](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/rosalynhatcher/32/11_2.png) [@RosalynHatcher](https://cms-helpdesk.ncas.ac.uk/u/RosalynHatcher)\
**Post date:** [4 January 2022 08:49 UTC](https://cms-helpdesk.ncas.ac.uk/t/number-of-fields-exceeded-error/230/4 "2022-01-04T08:49:03Z")

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