# Create topological features in pygplates and have issue when resolve these features

**URL:** https://discourse.gplates.org/t/create-topological-features-in-pygplates-and-have-issue-when-resolve-these-features/287
**Category:** Q&A
**Created:** [28 March 2021 15:52 UTC](https://discourse.gplates.org/t/create-topological-features-in-pygplates-and-have-issue-when-resolve-these-features/287 "2021-03-28T15:52:45Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### Author: ![john.cannon](https://discourse.gplates.org/letter_avatar_proxy/v4/letter/j/3e96dc/32.png) [@john.cannon](https://discourse.gplates.org/u/john.cannon)
#### Post date: [29 March 2021 12:16 UTC](https://discourse.gplates.org/t/create-topological-features-in-pygplates-and-have-issue-when-resolve-these-features/287/2 "2021-03-29T12:16:54Z")

</div>

Hi Lavie,

What you describe sounds correct.

Usually this problem is related to Feature IDs in one way or another. Have a look at [this post](https://discourse.gplates.org/t/trouble-creating-boundary-topologies/269/3) which covers two possible issues with feature IDs (duplicated IDs or a Shapefile mapping problem).

If that doesn’t solve the problem then feel free to send me some files that reproduce the problem and I’ll have a look.

Regards,  
John

---

_[View the full topic](https://discourse.gplates.org/t/create-topological-features-in-pygplates-and-have-issue-when-resolve-these-features/287)._