arcgisscripting.ExecuteError: ERROR 999999: Error executing function. Too many unique values Failed to execute (ZonalStatisticsAsTable).

[YilanWei]

arcgisscripting.ExecuteError: ERROR 999999: Error executing function.
Too many unique values
Failed to execute (ZonalStatisticsAsTable).

[DanPatterson]

Zonal Statistics as Table (Spatial Analyst)—ArcGIS Pro | Documentation

how many unique values are there in the raster table?

[YilanWei]

The shp file that I am using to zone with has 238235 elements. The raster file that is to be zonal statistic and find the maximum is a flow accumulation file of Yangtze River Basin made by 30 meter resolution SRTM DEM. Thank you Dan for asking.

[DanPatterson · Accepted solution]

you can change the number of unique values to use with this setting

[YilanWei]

Thanks a lot Dan! It works.

Yilan