Root element is missing.

Layer Filter
Feature Description	distname
Feature Keys
Where Clause
Spatial Filter
Geometry
Geometry Type	Envelope Multipoint Point Polygon Polyline
Spatial Reference
Spatial Relation	Intersects Contains Crosses Overlaps Touches Relation
Geometry Options
Max Allowable Offset
Output Options
Output Fields
Output Format	HTML JSON
Output Spatial Reference
Result Limit
Return Count Only	Yes No
Return Geometries	Yes No
Return Keys Only	Yes No

Supported Interfaces:  REST