# Transaction info with questasim 2022.4

**URL:** <https://forum.uvvm.org/t/transaction-info-with-questasim-2022-4/500>\
**Category:** VVC Framework\
**Created:** [June 9, 2025, 5:19pm UTC](https://forum.uvvm.org/t/transaction-info-with-questasim-2022-4/500 "2025-06-09T17:19:56Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Gastone](https://avatars.discourse-cdn.com/v4/letter/g/58f4c7/32.png) [@Gastone](https://forum.uvvm.org/u/Gastone)\
**Post date:** [June 9, 2025, 5:19pm UTC](https://forum.uvvm.org/t/transaction-info-with-questasim-2022-4/500/1 "2025-06-09T17:19:56Z")

</div>

Hi

I try to develop a DUT model and some custom VVCs, I start to develop all things with modelsim 10.6d, next I move to questasim 2022.4. When I run test under modelsim, model works well but all go wrong in questasim. In addition I can’t find transaction\_info related entries in the object window when I select a VVC in the instance tree.

There are know issues with this simulator?

---

<div class="post-metadata">

**Author:** ![Erick](https://avatars.discourse-cdn.com/v4/letter/e/bbce88/32.png) [@Erick](https://forum.uvvm.org/u/Erick)\
**Post date:** [June 10, 2025, 6:14am UTC](https://forum.uvvm.org/t/transaction-info-with-questasim-2022-4/500/2 "2025-06-10T06:14:24Z")

</div>

I think Questa might be optimizing some signals away, have you tried running the simulation without optimizations? e.g. -voptargs=+acc

---

<div class="post-metadata">

**Author:** ![Gastone](https://avatars.discourse-cdn.com/v4/letter/g/58f4c7/32.png) [@Gastone](https://forum.uvvm.org/u/Gastone)\
**Post date:** [June 10, 2025, 1:33pm UTC](https://forum.uvvm.org/t/transaction-info-with-questasim-2022-4/500/3 "2025-06-10T13:33:10Z")

</div>

Hi  
Nice catch! now transaction infos appear but I still collect wrong behaviour of simualtions. It needs more investigation: tests work fine under modelsim ☹

---

<div class="post-metadata">

**Author:** ![Erick](https://avatars.discourse-cdn.com/v4/letter/e/bbce88/32.png) [@Erick](https://forum.uvvm.org/u/Erick)\
**Post date:** [June 11, 2025, 7:01pm UTC](https://forum.uvvm.org/t/transaction-info-with-questasim-2022-4/500/4 "2025-06-11T19:01:52Z")

</div>

That’s strange, it’s difficult to say without looking at the testbench. Have you tested with some open source simulators?