Classification creation fails with: Missing classification

[sufo]

I'm trying to create my own classification via the WebScript but it fails with the error message: Missing classification: {travel.agency.model}taclassifiable
I have defined my own model (<namespace uri="travel.agency.model" prefix="ta"/>) in which there is this aspect defined:

      <aspect name="ta:taclassifiable">         <title>Travel Agency Classifiable</title>         <parent>cm:classifiable</parent>         <properties>            <property name="ta:categories">               <title>Categories</title>               <type>d:category</type>               <mandatory>false</mandatory>               <multiple>true</multiple>               <index enabled="true">                  <atomic>true</atomic>                  <stored>true</stored>                  <tokenised>false</tokenised>               </index>            </property>                  </properties>      </aspect>‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

When I try to execute this code, it generates above mentioned error:

var categoryRoot = roothome.childByNamePath("categories");var props = [];props["view:childName"] = "{travel.agency.model}taclassifiable";var classification = categoryRoot.createNode("taclassifiable", "cm:category", props, "cm:categories");‍‍‍‍‍

Am I missing something?

[sufo]

Found the solution, I replaced last line of the code and removed 'view:childName' property:

var categoryRoot = roothome.childByNamePath("categories");var props = [];var classification = categoryRoot.createNode("{travel.agency.model}taclassifiable", "cm:category", props, "cm:categories", "{travel.agency.model}taclassifiable");‍‍‍

This line also works:

var classification = categoryRoot.createNode("taclassifiable", "cm:category", props, "cm:categories", "ta:taclassifiable");‍