At the moment, the Commons data namespace is limited to a set of defined license codes. Any attempt to add a data file which has a different license is rejected with the message:
Error: Parameter "license" must be one of the valid license codes, for example CC0-1.0, CC-BY-1.0, CC-BY-2.0, CC-BY-2.5, CC-BY-3.0, CC-BY-4.0, CC-BY-4.0+, CC-BY-SA-1.0, CC-BY-SA-2.0, CC-BY-SA-2.5, CC-BY-SA-3.0, CC-BY-SA-4.0, CC-BY-SA-4.0+, ODbL-1.0
As far as I can work out this particular list was selected in 2018 in T200968. There are still open issues around handling licenses for datasets (tabular data or map files) on Commons "properly", but the principle of allowing non-CC0 licenses was approved with T154071, so it should be okay to add new ones to this list if they are comparable to existing licenses.
I'd like to ask for us to add:
- OGL-1.0
- OGL-2.0
- OGL-3.0
These are the three variants of the Open Government License, which is explicitly stated to be compatible/interoperable with CC-BY (CC-BY-4.0 for v 2 & 3, "any" for v 1), so there should be no legal issues that are not already present from allowing CC-BY data.
The OGL is the license used to release data by the UK government; I am hoping to use it to upload high-quality open data shapefiles released by the Ordnance Survey.