And I'm not super confortable with this sentence. What does mean "initiate your workflow"?
I do understand what you want to say, but for new comers, it could be confusing.

What about something like

When the object enter the workflow for the first time, the workflow will initialize theproperty with theinitial_place.
If you want to have always a valid marking in your database, you can use thegetMarking() method to initialize the object property with the initial place::

I'm not sure I understand this sentence :When the object enter the workflow for the first time, the workflow will initialize the property with the initial_place.

And instead ofinitial_place, I think we should useinitial_marking as in the configuration :https://symfony.com/doc/current/workflow.html#configuration

So, I would say :

If the property of your object is null and you want to set it with theinitial_marking in the configuration, you can call thegetMarking() method to initialize le object property::

WDYT ?

you are right about initial marking :) I used the old name, sorry.

You sentence is correct, let's go for it.

Minor detail:

- in the configuration+ from the configuration

DONE !

If it's ok for you, I let you resolve the conversation and maybe... merge the PR ?