Enrique Pérez Arnaud has asked me to draw attention to notes he added to a pyFF gihub issue, regarding duplicate entity ids in pyFF in different federations. The notes can be found here: https://github.com/IdentityPython/pyFF/issues/289# I will also add this link to the discussion of this issue in the IdPy developers meeting yesterday. The notes from that meeting will be out later today. Thank you, Shayna Atkinson SCG