# Is A3DSurfFromCurves implemented?

**URL:** <https://forum.techsoft3d.com/t/is-a3dsurffromcurves-implemented/2307>\
**Category:** HOOPS Exchange\
**Tags:** knowledge-base\
**Created:** [July 7, 2023, 5:55am UTC](https://forum.techsoft3d.com/t/is-a3dsurffromcurves-implemented/2307 "2023-07-07T05:55:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![gjnam](https://avatars.discourse-cdn.com/v4/letter/g/50afbb/32.png) [@gjnam](https://forum.techsoft3d.com/u/gjnam)\
**Post date:** [July 7, 2023, 5:55am UTC](https://forum.techsoft3d.com/t/is-a3dsurffromcurves-implemented/2307/1 "2023-07-07T05:55:19Z")

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Hi,

I’m worndering if **A3DSurfFromCurves** is implemented.

There is no any mention that it is not yet implemented in [the document](https://docs.techsoft3d.com/exchange/latest/api/group __a3d__ srffromcurves.html) unlike  
[A3DSurfPipe document](https://docs.techsoft3d.com/exchange/latest/api/group __a3d__ srfpipe.html).

But when I use **A3DSurfFromCurvesCreate** function, the return value is always **A3D\_NOT\_IMPLEMENTED** regardless of parameters.

Thanks.

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**Author:** ![Jonathan](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.techsoft3d.com/jonathan/32/44_2.png) [@Jonathan](https://forum.techsoft3d.com/u/Jonathan)\
**Post date:** [July 7, 2023, 11:39pm UTC](https://forum.techsoft3d.com/t/is-a3dsurffromcurves-implemented/2307/2 "2023-07-07T23:39:53Z")

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@gjnam Thank you for reporting this issue.

A3DSurfFromCurvesCreate is declared but does not point to any function in Exchange, I’ve logged a bug report within our support system in your behalf (SDHE-20636). We’ll have engineering take a closer look to see if there is a specific reason.