Can you provide the source of this information?
As far as I know, and according to multiple sources and personal testimonies, the PPU has absolutely no obligation whatsoever to tell you whether they will add a green notice to your passport. Moreover, it is highly likely that they will not
tell you. Stories on here of people asking their PPU flat-out whether they have a green notice have always resulted in the PPU refusing to answer.
If you notify travel to any EU or Schengen country, a SISII alert will always be generated. The PPU has no discretion here. But this is not a huge deal (currently), as you have the basically unconditional right to enter any EU country (the existence of convictions is not valid grounds to refuse an EU citizen entry to an EU country). You might get some tough questions but will then be let through.
But if you notify travel to a non-EU, non-Schengen country, as far as I know it is totally up to the PPU's discretion as to whether or not to issue an Interpol green notice, and they don't have to tell you.