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Error when published the website
Question

Hi everyone, I have one issue where i cant upload my project because its have an error and i dont understand what it means.

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Internal ErrorCompilation Error.

warning CS1685: The predefined type 'System.ObsoleteAttribute' is defined in multiple assemblies in the global alias; using definition from 'c:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll'

ScreenServices.Latihan_MainFlow_Room_ScreenModel.cs(381,22): error CS1061: 'ssLatihan.STRoomInfoStructure' does not contain a definition for 'ScreenDataSetGetRoomById' and no extension method 'ScreenDataSetGetRoomById' accepting a first argument of type 'ssLatihan.STRoomInfoStructure' could be found (are you missing a using directive or an assembly reference?)

target.ssId = source.ScreenDataSetGetRoomById.List.CurrentRec.ssENRoom.ssId;

ScreenServices.Latihan_MainFlow_Room_ScreenModel.cs(382,39): error CS1061: 'ssLatihan.STRoomInfoStructure' does not contain a definition for 'ScreenDataSetGetRoomById' and no extension method 'ScreenDataSetGetRoomById' accepting a first argument of type 'ssLatihan.STRoomInfoStructure' could be found (are you missing a using directive or an assembly reference?)

target.ssParticipantCapacity = source.ScreenDataSetGetRoomById.List.CurrentRec.ssENRoom.ssParticipantCapacity;


State: Second stage compilation



thanks

LatihanAmburadul.oml
2026-02-16 05-51-10
Sahana K

Hi Chalvina Suja Rahayu ,

Please refer the below link,
https://www.outsystems.com/forums/discussion/58021/internal-error-message-during-publish/

https://www.outsystems.com/forums/discussion/51809/how-to-fix-internal-error-compilation-error/

1.Check if ScreenDataSetGetRoomById exists in your OutSystems Data Structures.
2.If it was renamed, update references accordingly.
3.STRoomInfoStructure contains ScreenDataSetGetRoomById 
4.Manage Dependencies and ensure all referenced modules are updated. 



Thanks,
Sahana

2025-12-03 17-22-41
Lavanya Kamalaguru

Hi @Chalvina Suja Rahayu,

I have updated your oml file please check and confirm if you are able to publish.

The assignment is not correct in the CheckExistingRoom Data Action.

Thanks.


LatihanAmburadul.oml
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