# Error: Type not found: welddata (RobotWare 6.11)

**URL:** https://tech-community.robotics.abb.com/t/error-type-not-found-welddata-robotware-6-11/11871
**Category:** RAPID Programming
**Tags:** rapid-code, welddata, arcware
**Created:** [April 7, 2025, 1:36pm UTC](https://tech-community.robotics.abb.com/t/error-type-not-found-welddata-robotware-6-11/11871 "2025-04-07T13:36:16Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![DominikF](https://avatars.discourse-cdn.com/v4/letter/d/e99b99/32.png) [@DominikF](https://tech-community.robotics.abb.com/u/DominikF)
#### Post date: [April 7, 2025, 1:36pm UTC](https://tech-community.robotics.abb.com/t/error-type-not-found-welddata-robotware-6-11/11871/1 "2025-04-07T13:36:16Z")

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I am new to ArcWelding. I loaded the AddIn ArcWare for OmniCore and made a simulation for welding work. Through the option Controller → Installation → Modify installation  
I was able to add the ArcWare 7.xx package to the virtual controller

So I defined my welding parameters and the relevant path and the simulation worked.

I need to repeat that for RobotWare 6.11. However I cannot make it the way I have done it as described above and did not find another way.  
So when I of course define my welddata and my path, I ended up with this error “Type not found: welddata”.  
Could you please let me know which steps I have to follow (settings, packages to install) to make it work.

Thank you in advance!

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### Author: ![matti](https://avatars.discourse-cdn.com/v4/letter/m/e480ec/32.png) [@matti](https://tech-community.robotics.abb.com/u/matti)
#### Post date: [April 8, 2025, 6:46am UTC](https://tech-community.robotics.abb.com/t/error-type-not-found-welddata-robotware-6-11/11871/2 "2025-04-08T06:46:49Z")

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Hallo, I do not know about RW 7 but in RW 6, you have to use installation manager in RSO to install Arc Welding package. Open an existing virtual controller in installation manager. Under options/applications you can add application arc.  
For a real controller (online), your system must have a license for that option.

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### Author: ![DominikF](https://avatars.discourse-cdn.com/v4/letter/d/e99b99/32.png) [@DominikF](https://tech-community.robotics.abb.com/u/DominikF)
#### Post date: [April 9, 2025, 11:37am UTC](https://tech-community.robotics.abb.com/t/error-type-not-found-welddata-robotware-6-11/11871/3 "2025-04-09T11:37:17Z")

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Thank you matti for the guideline! I made it work based on that.