# API warning for SIS Mountain Tourism Meteorological and Snow Indicators

**URL:** <https://forum.ecmwf.int/t/api-warning-for-sis-mountain-tourism-meteorological-and-snow-indicators/984>\
**Category:** C3S - Announcements\
**Tags:** api, c3s, sis\
**Created:** [16 April 2021 09:16 UTC](https://forum.ecmwf.int/t/api-warning-for-sis-mountain-tourism-meteorological-and-snow-indicators/984 "2021-04-16T09:16:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Marcus\_Zanacchi](https://forum.ecmwf.int/letter_avatar_proxy/v4/letter/m/b9e5f3/32.png) [@Marcus\_Zanacchi](https://forum.ecmwf.int/u/Marcus_Zanacchi)\
**Post date:** [16 April 2021 09:16 UTC](https://forum.ecmwf.int/t/api-warning-for-sis-mountain-tourism-meteorological-and-snow-indicators/984/1 "2021-04-16T09:16:38Z")

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An update (v1.1) to the dataset [Mountain tourism meteorological and snow indicators for Europe from 1950 to 2100 derived from reanalysis and climate projections](https://cds.climate.copernicus.eu/cdsapp#!/dataset/sis-tourism-snow-indicators?tab=overview) will require you to update your API requests to account for the changes made to the download form. Version 1.1 includes a correction to a corrupted file and a change in the underlying algorithm used to calculate the start and end of the snow season.

Please use the Catalogue download form to generate a new API request.