# Conditional forecast path error

**URL:** <https://forum.dynare.org/t/conditional-forecast-path-error/27232>\
**Category:** Semistructural Modeling\
**Created:** [27 February 2025 22:03 UTC](https://forum.dynare.org/t/conditional-forecast-path-error/27232 "2025-02-27T22:03:41Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![rrremedio](https://forum.dynare.org/letter_avatar_proxy/v4/letter/r/898d66/32.png) [@rrremedio](https://forum.dynare.org/u/rrremedio)\
**Post date:** [27 February 2025 22:03 UTC](https://forum.dynare.org/t/conditional-forecast-path-error/27232/1 "2025-02-27T22:03:41Z")

</div>

Dear all,  
Any guess why this conditional forecast path results in “matrix singular to machine precision” warning and no results?  
Interesting, I can run the model with an extended path for DL\_E variable or not exogenizing it.  
I’m calling dynare with ‘nostrict’ option as this is an automated mod file which includes variables not used in the specific model.  
The model is private, but I can send it via private message or e-mail.  
[cf.mod](https://forum.dynare.org/uploads/short-url/5CwOxUw75d9a8cYve78Y4cOIkiT.mod) (8.0 KB)

---

<div class="post-metadata">

**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:** [1 March 2025 13:02 UTC](https://forum.dynare.org/t/conditional-forecast-path-error/27232/2 "2025-03-01T13:02:16Z")

</div>

You did not provide the `model_v3_2.mod`.

---

<div class="post-metadata">

**Author:** ![rrremedio](https://forum.dynare.org/letter_avatar_proxy/v4/letter/r/898d66/32.png) [@rrremedio](https://forum.dynare.org/u/rrremedio)\
**Post date:** [2 March 2025 11:12 UTC](https://forum.dynare.org/t/conditional-forecast-path-error/27232/3 "2025-03-02T11:12:37Z")

</div>

I will send it through a PM. Thank you for any help you can offer.

---

<div class="post-metadata">

**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:** [20 March 2025 16:39 UTC](https://forum.dynare.org/t/conditional-forecast-path-error/27232/4 "2025-03-20T16:39:29Z")

</div>

The problem was that you are trying to do a use-case that is not yet supported. The number of controlled varies changes across periods, but the number of controlled shocks cannot accommodate that.