# SLA and RIA throw error whereas SORA and PMA do not

**URL:** <https://uqworld.org/t/sla-and-ria-throw-error-whereas-sora-and-pma-do-not/1636>\
**Category:** Community Q&A and How To\
**Tags:** rbdo\
**Created:** [June 14, 2022, 9:46am UTC](https://uqworld.org/t/sla-and-ria-throw-error-whereas-sora-and-pma-do-not/1636 "2022-06-14T09:46:33Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Cedric](https://uqworld.org/letter_avatar_proxy/v4/letter/c/ecd19e/32.png) [@Cedric](https://uqworld.org/u/Cedric)\
**Post date:** [June 14, 2022, 9:46am UTC](https://uqworld.org/t/sla-and-ria-throw-error-whereas-sora-and-pma-do-not/1636/1 "2022-06-14T09:46:34Z")

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Hey,

I used the test case (4.2 Cantilever Beam Example) from the original SLA paper ([https://doi.org/10.1115/DETC2004-57255](https://doi.org/10.1115/DETC2004-57255) and for some reason SLA and RIA throw an error whereas SORA and PMA manage to solve the problem.

Does such an error mean that it did not converge or that there is a bug?

I can attach the code if I get permission.

Thanks for your help!  
Cedric

@moustapha

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**Author:** ![moustapha](https://uqworld.org/user_avatar/uqworld.org/moustapha/32/226_2.png) [@moustapha](https://uqworld.org/u/moustapha)\
**Post date:** [June 14, 2022, 10:05am UTC](https://uqworld.org/t/sla-and-ria-throw-error-whereas-sora-and-pma-do-not/1636/2 "2022-06-14T10:05:24Z")

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Hi @Cedric

Yes please attach the code and I will have a look asap.

Cheers,  
Moustapha

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**Author:** ![Cedric](https://uqworld.org/letter_avatar_proxy/v4/letter/c/ecd19e/32.png) [@Cedric](https://uqworld.org/u/Cedric)\
**Post date:** [June 14, 2022, 10:08am UTC](https://uqworld.org/t/sla-and-ria-throw-error-whereas-sora-and-pma-do-not/1636/4 "2022-06-14T10:08:59Z")

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Hey @moustapha

thanks for your help! Unfortunately, it tells me that I can’t attach the code because I am a new user.

Cheers  
Cedric

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**Author:** ![styfen.schaer](https://uqworld.org/user_avatar/uqworld.org/styfen.schaer/32/849_2.png) [@styfen.schaer](https://uqworld.org/u/styfen.schaer)\
**Post date:** [June 14, 2022, 2:37pm UTC](https://uqworld.org/t/sla-and-ria-throw-error-whereas-sora-and-pma-do-not/1636/5 "2022-06-14T14:37:35Z")

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Dear @Cedric

You can now try again. 🙂

Best regards  
Styfen