business central custom extensions

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Posted on by barbarbar

Hello everyone,

I have a question regarding Business Central Custom extension. So, my colleague had developed a custom extension for our BC and was used for a long time. now my colleague left the company and the custom extension is malfunctioning. I need to fix the bug.

I am new with business central so i did a little bit of research and learned how to go to Sandbox > Design > Do the modifications > Download the zip file then edit it in visual studio code and upload it to the production environment.

What i don't understand is how can i download the existing custom extension and modify it?

Thank you for your help

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Dynamics 365 Business Central

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Gerardo Rentería Ga... 27,054 Most Valuable Professional on at

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Hi

You may not be able to see the extension's encoding if development has been configured to not allow it.
To download the extension code you must go to Extensions Management.

Find your ex-coworker's extension, I advise you, filter by PTE

Go to extension and select "Download Source"

If you can download it, that's perfect, otherwise it's probably because your ex-coworker has configured it so that they cannot download it.

Here the explanation:

https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/developer/devenv-security-settings-and-ip-protection

Best Regards

Gerardo

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barbarbar 54 on at

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Thank you so much , luckily i can download the extension code, but there's another extension that i couldn't. is there a way to remove this restriction ? or if i sign in with my ex co worker credentials would i be able to download it ?. i'll now try to learn this language and see if i can fix the error

any guidance on what to learn to understand this ?

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Gerardo Rentería Ga... 27,054 Most Valuable Professional on at

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Hi

That sounds great.
What message do you get when you try to download the other one?
If you see that you cannot download it, it is because at the time of compiling the extension, your colleague used the required configurations to not allow that download.
He should give you the code.

Best Regards

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YUN ZHU 101,846 Super User 2026 Season 1 on at

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Hi, this is specified in the app.json file. If you are using the cloud version, you cannot lift this restriction.

More details:

https://yzhums.com/17688/

https://yzhums.com/29434/

Hope this helps.

Thanks.

ZHU

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CU26062042-0 on at

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Alright thank you guys since you already answered my initial question, ill go ahead and create another post for my second question which is how to modify the extension that cannot be downloaded.

and by the way, my ex coworker is no longer available so it is impossible to get the source code from him

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