Schematron using XPath 2.0
The attribute @unit must be equal to one of the following values 'arcmin', 'arcsec', 'deg', 'hr', 'mrad', 'rad'.
The attribute img_surface:geometry_projection_type must be equal to one of the following values 'Linearized', 'Raw'.
The attribute img_surface:linearization_mode must be equal to one of the following values 'Actual', 'Nominal', 'None'.
The attribute img_surface:linearization_mode_fov must be equal to one of the following values 'Linear', 'Max', 'Min', 'None'.
The attribute @unit must be equal to one of the following values 'AU', 'Angstrom', 'cm', 'km', 'm', 'micrometer', 'mm', 'nm'.
The attribute @unit must be equal to one of the following values 'AU', 'Angstrom', 'cm', 'km', 'm', 'micrometer', 'mm', 'nm'.
The attribute @unit must be equal to one of the following values 'AU', 'Angstrom', 'cm', 'km', 'm', 'micrometer', 'mm', 'nm'.
The attribute @unit must be equal to one of the following values 'AU', 'Angstrom', 'cm', 'km', 'm', 'micrometer', 'mm', 'nm'.
In img_surface:Geometry_Projection, Internal_Reference.reference_type must be equal to 'data_to_linearization_partner'.
In img_surface:Stereo_Product_Parameters, Internal_Reference.reference_type must be equal to 'data_to_stereo_partner'.
In img_surface:Surface_Imaging, Local_Internal_Reference.local_reference_type must have value 'mars_surface_imaging_to_image_object'
In img_surface:Error_Model, Internal_Reference.reference_type must be equal to 'data_to_error_model'.
In img_surface:Placement_Target_Instrument, Internal_Reference.reference_type must be equal to 'data_to_placement_instrument'.