# How to treat a previously endogenous factor as exogenous **URL:** \ **Category:** General DSGE Modeling\ **Created:** [6 August 2020 19:53 UTC](https://forum.dynare.org/t/how-to-treat-a-previously-endogenous-factor-as-exogenous/16386 "2020-08-06T19:53:35Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Apica](https://forum.dynare.org/letter_avatar_proxy/v4/letter/a/a88e4f/32.png) [@Apica](https://forum.dynare.org/u/Apica)\ **Post date:** [6 August 2020 19:53 UTC](https://forum.dynare.org/t/how-to-treat-a-previously-endogenous-factor-as-exogenous/16386/1 "2020-08-06T19:53:36Z")
Hello. I want to treat E\_Inflation as exogenous now. However, the number of endogenous variables will not be equal to the number of equations then. Could you please suggest me what other changes need be made?[apica.mod](https://forum.dynare.org/uploads/short-url/qo05AQUd73tcQ9rSEgmCKI8Za9Z.mod) (4.2 KB) ---
**Author:** ![Apica](https://forum.dynare.org/letter_avatar_proxy/v4/letter/a/a88e4f/32.png) [@Apica](https://forum.dynare.org/u/Apica)\ **Post date:** [7 August 2020 08:21 UTC](https://forum.dynare.org/t/how-to-treat-a-previously-endogenous-factor-as-exogenous/16386/2 "2020-08-07T08:21:19Z")
someone please guide ---
**Author:** ![jpfeifer](https://forum.dynare.org/user_avatar/forum.dynare.org/jpfeifer/32/5044_2.png) [@jpfeifer](https://forum.dynare.org/u/jpfeifer)\ **Post date:** [8 August 2020 10:08 UTC](https://forum.dynare.org/t/how-to-treat-a-previously-endogenous-factor-as-exogenous/16386/3 "2020-08-08T10:08:00Z")
Please do not double post. See > [@No steady state and NO IRF RESULTS](https://forum.dynare.org/t/no-steady-state-and-no-irf-results/16330/18): > > You should not approach this from a technical perspective, but from an economic one. What you are asking is inconsistent with rational expectations modeling. So what is it that you are trying to do?