If you manage several salary companies, it can be interesting to have central files of references if they are all of the same type.
The principle is that you feed the references from a company that updates the central files and that the others point to them. This avoids having to recreate the same references in all the companies.
To do this, a dedicated directory must be created and the companies must be set up so that they point to it (company parameters - Import-export paths and classes tab):
Specify the same path in the companies that will use this same data source.