26.0.30643.32477 (Preview) - error CS0102

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Posted on by Nick Webb

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I'm testing one of my extensions on a Sandbox running version: 26.0.30643.32477 (Preview) and when I select 'Publish without debugging' the lines below are displayed in the Console of the code editor:

[2025-04-02 15:55:28.41] Error: C# compilation has failed for the application object CodeUnit_50024.
The failing c# file name is E2304FBC7C4AFA5538E1C81DFB4C48646798BDFD6531E806B1CD1E962A28035F.cs. You can find this file with the associated AL file saved in the C:\ProgramData\Microsoft\Microsoft Dynamics NAV\260\Server\MicrosoftDynamicsNavServer$MS\apps\compilationerrors folder.
Detailed compilation error: C:\ProgramData\Microsoft\Microsoft Dynamics NAV\260\Server\MicrosoftDynamicsNavServer$MS\apps\metadata\3\E2304FBC7C4AFA5538E1C81DFB4C48646798BDFD6531E806B1CD1E962A28035F.cs(561,40): error CS0102: The type 'Codeunit50024' already contains a definition for 'ProcessDateRange_TextConst_βconst'
C:\ProgramData\Microsoft\Microsoft Dynamics NAV\260\Server\MicrosoftDynamicsNavServer$MS\apps\metadata\3\E2304FBC7C4AFA5538E1C81DFB4C48646798BDFD6531E806B1CD1E962A28035F.cs(562,40): error CS0102: The type 'Codeunit50024' already contains a definition for 'ProcessDateRange_TextConst_βconst'

When I test the process and it gets to the line where it calls the DateRangeProcessor codeunit (mentioned above), I get a 'Something went wrong' web-page.

What's causing this?

Categories:

Dynamics 365 Business Central

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Nick Webb 809 on at

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26.0.30643.32477 (Preview) - error CS0102

As previously stated further down this trail:

It gets to the line below where it calls a procedure in a codeunit in the extension (DateRangeProcessor) and aborts as it calls the procedure with no error reported in the code-editor. It doesn't even get to the first line in the procedure. In the browser: 'Something went wrong. An error has occurred'. No actual error is reported.

cuDRP: Codeunit DateRangeProcessor;

txtEditedDesc := cuDRP.ProcessDateRange(txtDesc, txtRecurrence);

No friendly error message like: 'Invalid TextConst' or other?
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Khushbu Rajvi. 17,504 Super User 2025 Season 1 on at

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26.0.30643.32477 (Preview) - error CS0102

Have you tried putting a debugger and stepping through the code to see exactly where it fails?
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Nick Webb 809 on at

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26.0.30643.32477 (Preview) - error CS0102

I've nailed it, but an error message would've been nice? I had 3 TextConst's at the top of the offending procedure. Turns out, I'm not even using them so I commented them out and all is now working. Version 25 and before did not object to these 3 lines but V26 crashes. That's a day of my life I won't get back.

procedure ProcessDateRange(txtDesc: Text; txtRecurrence: Text): Text

var

// PLUSONEMONTH: TextConst ENU = '+1M';

// PLUSONEQUARTER: TextConst ENU = '+1Q';

// PLUSONEYEAR: TextConst ENU = '+1Y';
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Khushbu Rajvi. 17,504 Super User 2025 Season 1 on at

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26.0.30643.32477 (Preview) - error CS0102

No nothing is wrong. So are you facing same issue in this new sandbox?
Nick Webb 809 on at

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26.0.30643.32477 (Preview) - error CS0102

When I created the Sandbox in the Admin Centre I choose as below:

The resultant Sandbox shows:

and in the BC GUI it shows:

Is this wrong?
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Khushbu Rajvi. 17,504 Super User 2025 Season 1 on at

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26.0.30643.32477 (Preview) - error CS0102

You please try with this new version 26.0.30643.32100

https://learn.microsoft.com/en-us/dynamics365/release-plan/2025wave1/smb/dynamics365-business-central/
Nick Webb 809 on at

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26.0.30643.32477 (Preview) - error CS0102

I now have a Sandbox running the release version 26:

... and it hasn't changed a thing. It still crashes out as previously described. Once again, I have no error to guide me. Only: 'Something went wrong. An error has occurred'. Where can I look for errors. I had a look in Event viewer. Nothing there of interest.
Other extensions are working fine.
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YUN ZHU 85,674 Super User 2025 Season 1 on at

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26.0.30643.32477 (Preview) - error CS0102

Hi, Business Central 2025 wave 1 (BC26) is generally available.

More details: https://yzhums.com/62943/

Please try again in the released version.

Hope this helps.

Thanks.

ZHU
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Ramesh Kumar 5,458 on at

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26.0.30643.32477 (Preview) - error CS0102

Hi Nick,

As this is the Preview version, it's likely this issue will occur. I suggest logging it on Yammer with BC team.

Thanks

Ramesh

If this was helpful, please check the "Does this answer your question?" box and mark it as verified.
Nick Webb 809 on at

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26.0.30643.32477 (Preview) - error CS0102

Just to add, I've dealt with all the warnings and the extension is now compiling with no warnings or errors, but it hasn't changed a thing. It still crashes out as previously described.