Updating database fails after changing class's parent class

[eric24V]

Hello,

I tried to change the parent class of licence like this:

<class id="Licence" _delta="must_exist">
  <parent _delta="redefine">Contract</parent>
  <fields _delta="redefine">
    ...
  </fields>
</class>

The installation fails at step "Updating database schema" at 40 % with the following error:

Fatal error: Uncaught Error: Class "Licence" not found in /var/www/html/mytestitop/env-production/itop-config-mgmt/model.itop-config-mgmt.php:2165

The datamodel-production.xml looks valid to me. If I take the definition of class Licence from datamodel-production.xml and put in in my extension with _delta="redefine" to redefine the class completely, the error is the same.

Thanks for any help.

[Vincent @ Combodo]

Hi,
It's a very old identified iTop limitation, it is not possible to change the parent class of a class. Whatever method you use, you ends up in trouble.
You need to create a new class under contract mirroring the Licence class attributes...
Regards