I think tree structure is created using the Code field not the navigation field.
Thank you for your response Emre.
I added my tree structure in the uuu_cm(x)_code and it's working. It seems that Unifier locks this field once it has been deployed, which seems to be a security in order to don't break the tree structure (I had to create a new configurable module code and records sub-type in order to define my tree structure).
I understood that this configurable module doesn't resolve my issue, as the others. I need to create a tree structure that I can adjust as the Cost Sheet CBS : I need to create intermediate level that I can select as a picker and not for consolidation. For example :
Grey line are consolidation line and blank line are selectable on a Picker (we can do this kind of structure on Cost Sheet with indent/outdent functionnality).
Do you know if we can use a sub-type of configurable module to do this ?
Also, what is the Navigation Code used for ? When I read Unifier documentation, I thought that Navigation Code was used for create tree structure.
Thank you for your help.