# CHK\_LOOK\_BOUNDA: Wrong number of LBC fields on last forecast

**URL:** <https://cms-helpdesk.ncas.ac.uk/t/chk-look-bounda-wrong-number-of-lbc-fields-on-last-forecast/1256>\
**Category:** Unified Model\
**Tags:** ARCHER2, Nesting-Suite\
**Created:** [16 November 2023 16:39 UTC](https://cms-helpdesk.ncas.ac.uk/t/chk-look-bounda-wrong-number-of-lbc-fields-on-last-forecast/1256 "2023-11-16T16:39:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![shakka](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/shakka/32/111_2.png) [@shakka](https://cms-helpdesk.ncas.ac.uk/u/shakka)\
**Post date:** [16 November 2023 16:39 UTC](https://cms-helpdesk.ncas.ac.uk/t/chk-look-bounda-wrong-number-of-lbc-fields-on-last-forecast/1256/1 "2023-11-16T16:39:10Z")

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Hi folks,

I’m getting a mystifying error on the final forecast of some cycles related to the LBCs:

```auto
????????????????????????????????????????????????????????????????????????????????
???!!!???!!!???!!!???!!!???!!! ERROR ???!!!???!!!???!!!???!!!???!!!
? Error code: 2
? Error from routine: INBOUNDA
? Error message: CHK_LOOK_BOUNDA : Wrong number of LBC fields
? Error from processor: 236
? Error number: 76
????????????????????????????????????????????????????????????????????????????????

```

I have tried:

- re-running the final create\_lbc task and re-triggering the final forecast
- deleting ALL the lbcs and re-triggering the final forecast
- re-running the entire cycle again

None of those have worked.

Closer inspection shows that the final LBC file has _exactly_ the same number of fields as all the other LBC files, so I’m quite confused about what it’s complaining about. Any ideas? The suite currently experiencing this problem is u-da700.

Cheers  
Ella

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<div class="post-metadata">

**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/cms_support/original/1X/1fd2411499ffcbc299fe756cd5cdf26e44956558.png) [@system](https://cms-helpdesk.ncas.ac.uk/u/system)\
**Post date:** [16 December 2023 16:40 UTC](https://cms-helpdesk.ncas.ac.uk/t/chk-look-bounda-wrong-number-of-lbc-fields-on-last-forecast/1256/2 "2023-12-16T16:40:02Z")

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