A simple way to confirm that a template is working as expected is to use the "Reapply templates" option from the "Object" menu in Manager when the master data for an ADSAccount is viewed.
If the template is configured correctly the value of the field on the ADSAccount should update with the value from the Person table, as per the configured code.
If there is already a value for the column on the ADSAccount table, ensure that the "overwrites" option has been selected on the custom tab for the column on the ADSAccount table. For more information please refer to Knowledge Article 146707
, ADSAccount attributes are not updating properly from the Employee object
Additionally, if the value for the Employee object is updated, this should cause the value for the column on the ADSAccount to update automatically. If not, there may be a problem with the template code. Check default columns for examples on how to write a custom template. There are also examples in the Identity Manager SDK (found in the installation media).