Multiurl.http ERROR while getting NO data

Datasets and Usage
1

Hi, I am collecting data for several postal codes in the Netherlands. At the moment this works for all postal codes and for the years 2021-2025. Only for 1 specific month and specific postal code it doesn’t work and I get the error: ERROR:multiurl.http:URL https://object-store.os-api.cci2.ecmwf.int:443/cci2-prod-cache-1/2026-06-17/2bf7e3c6792fb3d7650028f0df2f2ddf.zip <?xml version="1.0" encoding="UTF-8"?><Error><Code>AccessDenied</Code><Message></Message><BucketName>cci2-prod-cache-1</BucketName><RequestId>tx000006c97e2369caafee2-006a339736-35cd91b8-default</RequestId><HostId>35cd91b8-default-default</HostId></Error>

This is the code I am using:

dataset = 'cams-europe-air-quality-reanalyses'
request = {'variable' : ['particulate_matter_2.5um', 'nitrogen_dioxide'],
                         'model'       : ['ensemble'],
                         'level'       : ['0'],
                         'year'        : ['2025'],
                         'month'       : ['05'],
                         'type'        : ['interim_reanalysis'],
                         'data_format' : ['netcdf'],
                         'area'        : [53.26, 6.04, 53.17, 6.14]      
          }
client.retrieve(dataset, request, ncfile)

The result is the above error and an empty nc-file. It is a reproducible error for this area and month, but it works for all other area’s (and months).
Any ideas?
Thanks in advance, Bas

2

Hi,
it could be caused by a cache issue.
Please try again and follow the instruction here: How to avoid the ADS cache issue

Thanks