-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.witsml.org/schemas/131" version="1.3.1">
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 <xsd:include schemaLocation="attgrp_uid.xsd"/>
-<xsd:complexType name="cs_otdr">
-<xsd:annotation>
 <xsd:documentation>This records the result arrays, along with context information, from an Optical Time Domain Reflectometry (OTDR) run. The arrays will define the relative scattered power from the Rayleigh scattering vs distance along the fiber. The actual data values are recorded in a wellLog object, which is referenced in a subelement.</xsd:documentation>
 </xsd:annotation>
-<xsd:sequence>
-<xsd:element name="reasonForRun" type="witsml:OTDRReason" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The reason the OTDR test was run. The three main reasons are 'pre-installation', which is before the installation of the fiber; 'post-installation', which is used to validate a successful fiber installation; and 'DTS run', which is a quality check of the fiber prior to a DTS run. A fourth permitted value is 'other'.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dTimRun" type="witsml:timestamp" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The dateTime of the run.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="dataInWellLog" type="witsml:refNameString" minOccurs="1" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A reference to the well log used to record the table of data.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="fiberEndConncected" type="witsml:refNameString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A pointer to the fiber connection node. If more than one node is available for a well/wellbore, this element is used to specify which node is connected to the instrument box. This name should correspond to the fiberEndPoint/name that is recorded in the installed system object.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="comment" type="witsml:commentString" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>A general comment about the OTDR run.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
 </xsd:sequence>
-<xsd:attributeGroup ref="witsml:attgrp_uid">
-<xsd:annotation>
 <xsd:documentation>Unique identifier for the run.</xsd:documentation>
 </xsd:annotation>
 </xsd:attributeGroup>
 </xsd:complexType>
 </xsd:schema>