Attribute value error

[MarkShark]

I get and error in the following XML that states "Attribute value "B0" of type ID must be unique within the document. What exactly does this mean and how would I fix it? Thanks a million in advance.

<?xml version = &quot;1.0&quot; encoding = &quot;UTF-8&quot;?>
<!DOCTYPE course SYSTEM &quot;../DTD/sco_csf(5).dtd&quot;>
<course>
<globalProperties>
<externalMetadata>
<source>TESCO</source>
<model>ADL SCORM 1.0</model>
<location>3M.xml</location>
</externalMetadata>
<curricularTaxonomy>
<model>ADL Sample LMS Course Model</model>
</curricularTaxonomy>
</globalProperties>
<!-- The whole course -->

<block id = &quot;B0&quot;>
<!--<objectiveRef targetIDs=&quot;O1&quot;/>-->

<identification>
<title>3M</title>
<description>This course prepares Naval Officers and Petty Officers to administer and operate Shipboard 3-M Systems.</description>
<labels>
<curricular>COURSE</curricular>
<developer>TESCO</developer>
</labels>
</identification>
<!-- Course Intro -->

<block id = &quot;B000&quot;>
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>courses/3M.xml</location>
</externalMetadata>
<!--<objectiveRef targetIDs=&quot;O2&quot;/>-->

<identification>
<title>Overview</title>
<description>Course Intro</description>
<labels>
<curricular>LESSON</curricular>
<developer>TESCO</developer>
</labels>
</identification>
<completionReq type = &quot;aicc_script&quot;> <![CDATA[A000001]]> </completionReq>
<au id = &quot;A000001&quot;>
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>3M/Introduction/3m_intro.xml</location>
</externalMetadata>
<identification>
<title>Overview</title>
<description>au00</description>
<labels>
<curricular>AU</curricular>
<developer>TESCO</developer>
</labels>
</identification>
<launch>
<location>3M/Introduction/3m_intro.html</location>
</launch>
</au>
<!--A000001-->

</block>
<!--B000-->

<block id = &quot;B100&quot;>
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>3M/Lesson01.xml</location>
</externalMetadata>
<!--<objectiveRef targetIDs=&quot;O2&quot;/>-->

<identification>
<title>Unit 1: Ships' 3M Systems</title>
<description>Ships' 3M Systems</description>
<labels>
<curricular>LESSON</curricular>
<developer>TESCO</developer>
</labels>
</identification>
<completionReq type = &quot;aicc_script&quot;> <![CDATA[A000001]]> </completionReq>
<au id = &quot;A100001&quot;>
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>3M/Ships3M/Ships3M.xml</location>
</externalMetadata>
<identification>
<title>Introduction to Ships' Maintenance and Material Management (3-M)
Systems</title>
<description>Ships3M</description>
<labels>
<curricular>AU</curricular>
<developer>TESCO</developer>
</labels>
</identification>
<launch>
<location>3M/Ships3M/3m_u1_t1.html</location>
</launch>
</au>
<!--A100001-->

</block>
<!--B100-->

</block>
</course>

 

[wujen]

MarkShark,

Just get all your block i end end tags the block b0 has no end tag...it id needs and end tag


Aaron