# Using XIOS to write restarts fails in NEMOv5.0

**URL:** <https://nemo-ocean.discourse.group/t/using-xios-to-write-restarts-fails-in-nemov5-0/823>\
**Category:** Uncategorized\
**Tags:** XIOS\
**Created:** [16 January 2025 08:01 UTC](https://nemo-ocean.discourse.group/t/using-xios-to-write-restarts-fails-in-nemov5-0/823 "2025-01-16T08:01:02Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Franziska](https://avatars.discourse-cdn.com/v4/letter/f/8797f3/32.png) [@Franziska](https://nemo-ocean.discourse.group/u/Franziska)\
**Post date:** [16 January 2025 08:01 UTC](https://nemo-ocean.discourse.group/t/using-xios-to-write-restarts-fails-in-nemov5-0/823/1 "2025-01-16T08:01:03Z")

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Hi all!

I’m doing some first tests in the released version 5.0 still using XIOS2.  
Writing restarts through XIOS (`nn_wxios = 1`) fails. Apparently due to some missing iom\_axis-definitions for 1 and 16 levels axes.

(See also [missing iom\_axis definitions for restart related to mpp\_delay (XIOS) (#539) · Issues · NEMO Workspace / Nemo · GitLab](https://forge.nemo-ocean.eu/nemo/nemo/-/issues/539) )

Any hint on how to solve this is very much appreciated.

Best regards,  
Franziska