The 'ListTemplateId' attribute is invalid - The value '100' is invalid according to its datatype

The XML for my EventReceiver is as follows:

<?xml version="1.0" encoding="utf-8"?>
<Elements xmlns="http://ift.tt/sQmbje">
<Receivers ListTemplateId="100">
  <Receiver>
    <Name>MyItemAdding</Name>
    <Type>ItemAdding</Type>
    <Assembly>$SharePoint.Project.AssemblyFullName$</Assembly>
    <Class>My.Solution.MyClass.MyClass</Class>
    <SequenceNumber>10001</SequenceNumber>
  </Receiver>
  <Receiver>
    <Name>MyItemAdded</Name>
    <Type>ItemAdded</Type>
    <Assembly>$SharePoint.Project.AssemblyFullName$</Assembly>
    <Class>My.Solution.MyClass.MyClass</Class>
    <SequenceNumber>10001</SequenceNumber>
  </Receiver>
 </Receivers>
</Elements>

In Visual Studio a warning appears on the third line where it says "100".

The error is as follows:

Warning 1 The 'ListTemplateId' attribute is invalid - The value '100' is invalid according to its datatype 'http://ift.tt/1wTpRNY' - The Enumeration constraint failed. My.Solution\Elements.xml 3 30

What does this warning mean and how can I fix it?