create a postgis table with a 'POINTM' type and try to do an insert
CodeHaus Comment From: jratike80 - Time: Tue, 10 Feb 2015 04:29:26 -0600
<p>Related ticket is already closed. Can anybody say directly if XYM geometries in PostGIS are supported for WFS-T nowadays?</p>
To the best of my knowledge, they are not. There is also no way to represent M in GML, nor I'm aware of attempts to handle measures in the library... given the current code it's possible that the M will be treated as Z instead.
I would say that if M in not supported in GML it is not a bug that transactions fail. It may be a bug that Geoserver allows users to try to do it.