# What causes Transaction Pool Error?

**URL:** <https://forum.algorand.co/t/what-causes-transaction-pool-error/3664>\
**Category:** General\
**Tags:** testnet, general\
**Created:** [July 2, 2021, 3:59am UTC](https://forum.algorand.co/t/what-causes-transaction-pool-error/3664 "2021-07-02T03:59:28Z")\
**Posts on this page:** 1\
**Showing post:** 4

<div class="post-metadata">

**Author:** ![fabrice](https://avatars.discourse-cdn.com/v4/letter/f/5fc32e/32.png) [@fabrice](https://forum.algorand.co/u/fabrice)\
**Post date:** [April 13, 2022, 1:32pm UTC](https://forum.algorand.co/t/what-causes-transaction-pool-error/3664/4 "2022-04-13T13:32:41Z")

</div>

These two transactions have a different “first round” (as you can see in “More Information”).

---

_[View the full topic](https://forum.algorand.co/t/what-causes-transaction-pool-error/3664)._