About [[Translations:Translating:OpenStreetMap/Page display title/en]]
Fragment of a discussion from Support/LiquidThreads
The link in the original query leads to a section of the "translatable pages" translating the Open Street Map project page. I also get a permission warning when I try to go to these messages in bcl, but can access them in 2 other languages (cy and cs), and can access other messages in the bcl translatable pages group. Also, I have noticed that the Open Street Map project page is not listed in the list of "Translatable pages" on the translation tool in language cy.
That's correct, Translating:OpenStreetMap is discouraged (I made it translatable only to recover some translation made by mistake).