The ADM1 & ADM2 location types will most likely not give enough depth to the real world. For example in Uganda the levels are like
To translate this to IATI. A handpump (where placing it is a IATI Activity), would serve Zone level.
The people on OpenStreetmap have come up with an idea to have an Admin tag (which contains the name) and an admin_level (which contains a number between 1-0, except for Germany where there are 11 levels!)
The OpenStreetMap community maintains a wikipage where they describe the meaning of every admin_level in every country. http://wiki.openstreetmap.org/wiki/Key:admin_level#10_admin_level_values_for_specific_countries
As the Admin Level 1 and Admin Level 2 lists are still empty, could we change the standard to use the latter model? I'd be happy to write the xml-schema if we would agree on this.