I've created an XSD v1.1 schema validator for midi maps. You can find it at https://github.com/chippyash/ardour-midi-map.
If you find any inconsistencies please do use the facilities at github to report issues, not here in Ardour.
Your subscriptions & donations are critical help that make it possible for full-time development of Ardour to continue. Your support is critical and much appreciated.
July goal US$6200 (US$74.4k/yr)
Subscribers 3064 US$7888.00/month
Support Ardour, get free upgrades: pay $1, $4, $10 or $50/month: