# API download error - ERA5-Land

**URL:** <https://forum.ecmwf.int/t/api-download-error-era5-land/14661>\
**Category:** API\
**Tags:** era5-land\
**Created:** [2 February 2026 22:48 UTC](https://forum.ecmwf.int/t/api-download-error-era5-land/14661 "2026-02-02T22:48:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Felipe\_Palma](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/f/e0b2c6/32.png) [@Felipe\_Palma](https://forum.ecmwf.int/u/Felipe_Palma)\
**Post date:** [2 February 2026 22:48 UTC](https://forum.ecmwf.int/t/api-download-error-era5-land/14661/1 "2026-02-02T22:48:44Z")

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I’m trying to download 2m\_temperature and snow\_cover data from ERA5-Land using the cdsapi. I used a slightly modified version of the request generated by the CDS website and I get the following error message:

Full error message:  
mars - ERROR - 20260202.204627 - Ambiguous : 2m\_temperature could be 2M TEMPERATURE ANOMALY OF AT MOST -1K or 2M TEMPERATURE ANOMALY OF AT MOST -2K  
mars - ERROR - 20260202.204627 - Ambiguous : snow\_cover could be SNOW EVAPORATION or SNOW EVAPORATION VARIABLE RESOLUTION

I appreciate any kind of advise!