Missing required node Version at ???.'

[adelavega]

This is due to missing Version node in SourceDatasets, but AFAIK that is not a required field

[{'severity': 'error',
  'offender': {'DOI': '10.18112/openneuro.ds000003.v1.0[...]', 'URL': 'https://doi.org/10.18112/openneu[...]'},
  'message': 'Missing required node Version at ???.'}]

on pybids test dataset ds005

[erdalkaraca]

fixed: not sure why I thought that field was required, initially

will keep this issue open as the validation message is cryptic and needs further refinement