Technical notes to self

iManager does not like you setting an attribute value to blank. A small LDIF like below will do the trick:

dn: cn=tomjones,ou=users,o=data
change type: modify
add: telephoneNumber
telephoneNumber: 

 The following will strip blank attributes from an IDM Driver. Normally add to output transform.

     <rule>
        <description>Strip Empty Values [Add]</description>
        <conditions>
            <and>
                <if-operation mode="case" op="equal">add</if-operation>
            </and>
        </conditions>
        <actions>
            <do-strip-xpath expression="add-attr[value='']"/>
            <do-strip-xpath expression="add-attr[not(*)]"/>
        </actions>
    </rule>
    <rule>
        <description>Strip Empty Values [Modify]</description>
        <conditions>
            <or>
                <if-operation mode="case" op="equal">modify</if-operation>
                <if-operation mode="case" op="equal">sync</if-operation>
            </or>
        </conditions>
        <actions>
            <do-strip-xpath expression="modify-attr/add-value[value='']"/>
            <do-strip-xpath expression="modify-attr[not(*)]"/>
        </actions>
    </rule>