# Warning: Surface.ByPatch operation failed. Unable to patch a single, non-closed curve

**URL:** <https://forum.dynamobim.com/t/warning-surface-bypatch-operation-failed-unable-to-patch-a-single-non-closed-curve/69578>\
**Category:** Revit\
**Tags:** dynamo\
**Created:** [October 22, 2021, 1:40pm UTC](https://forum.dynamobim.com/t/warning-surface-bypatch-operation-failed-unable-to-patch-a-single-non-closed-curve/69578 "2021-10-22T13:40:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![aleocamp329](https://avatars.discourse-cdn.com/v4/letter/a/5e9695/32.png) [@aleocamp329](https://forum.dynamobim.com/u/aleocamp329)\
**Post date:** [October 22, 2021, 1:40pm UTC](https://forum.dynamobim.com/t/warning-surface-bypatch-operation-failed-unable-to-patch-a-single-non-closed-curve/69578/1 "2021-10-22T13:40:06Z")

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Hi! I hope someone can help me. Im trying to do a Bubble diagram for a school project. I downloaded the package from Refinery toolkits. Im new to Dynamo.

When I get to the Surface by Patch it gives me an error  
Warning: Surface.ByPatch operation failed.  
Unable to patch a single, non-closed curve

I would appreciate any help! thank you

 ![Screen Shot 2021-10-22 at 9.33.09 AM](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/6/c/6c78f2bf596e4f7dcf1fdecd0aa940c28847a060.png)  
 ![Screen Shot 2021-10-22 at 9.32.37 AM](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/5/0/509a306bb88dcb1b14b30a1b3b064a3ea53b3645.png)

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**Author:** ![Nick\_Boyts](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/nick_boyts/32/76313_2.png) [@Nick\_Boyts](https://forum.dynamobim.com/u/Nick_Boyts)\
**Post date:** [October 22, 2021, 6:14pm UTC](https://forum.dynamobim.com/t/warning-surface-bypatch-operation-failed-unable-to-patch-a-single-non-closed-curve/69578/2 "2021-10-22T18:14:24Z")

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`Surface.ByPatch` requires a single closed curve to patch. You’ll have to group your curves and combine them into polycurves first.

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**Author:** ![aleocamp329](https://avatars.discourse-cdn.com/v4/letter/a/5e9695/32.png) [@aleocamp329](https://forum.dynamobim.com/u/aleocamp329)\
**Post date:** [October 23, 2021, 8:14pm UTC](https://forum.dynamobim.com/t/warning-surface-bypatch-operation-failed-unable-to-patch-a-single-non-closed-curve/69578/4 "2021-10-23T20:14:58Z")

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Thank you very much!!

![Screen Shot 2021-10-23 at 4.03.22 PM](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/0/0/00f3c5da1d58cf47e6f0d51b7c6d119ba0d0dc53.png)

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<div class="post-metadata">

**Author:** ![aleocamp329](https://avatars.discourse-cdn.com/v4/letter/a/5e9695/32.png) [@aleocamp329](https://forum.dynamobim.com/u/aleocamp329)\
**Post date:** [October 23, 2021, 10:23pm UTC](https://forum.dynamobim.com/t/warning-surface-bypatch-operation-failed-unable-to-patch-a-single-non-closed-curve/69578/5 "2021-10-23T22:23:45Z")

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I am honestly VERY grateful!!! without your help I would still be trying to figure this out!

Now i just need to figure out how to have the circles no be on top of each other lol