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Dynamics 365 Community / Forums / Small and medium business | Business Central, N... / Remove the previous ex...
Small and medium business | Business Central, N...
Suggested answer

Remove the previous extension - Error AL0334

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Posted on by account2@hibeaubc 5

Hi experts, 

I am new to MS D365 Business Central and .al language. 

I created a new extension to "Prod. Order - Job Card" previously, and I realized that it cannot perform ideally. So I deleted the previous work folder (the entire project, and emptied my trashbin), hoping that the extension will be removed too. 

However, the extension seemed to have remained and now this error message AL0334 is preventing me from any kind of customization to this "Prod. Order - Job Card" report. 

Is there any way that I can find the previous extension and remove it? 

Or how can I resolve this issue? BC version: W1 21.1. Attached the new extension SS, the copied report "Prod. Order - Job Card.1" and the added line by the previous extension. 

Thank you.

Screenshot-2022_2D00_12_2D00_15-150502.pngScreenshot-2022_2D00_12_2D00_15-150528.png Screenshot-2022_2D00_12_2D00_15-145446.pngScreenshot-2022_2D00_12_2D00_15-145503.png

  • account2@hibeaubc Profile Picture
    account2@hibeaubc 5 on at
    RE: Remove the previous extension - Error AL0334

    Sure, the error message is: The extension object 'My Job Card1' cannot be declared. Another extension for target 'Prod. Order - Job Card.1' or the target itself is already declared in this module. (AL0334) I will consult my MS partner on if there is an existing extension.

  • Suggested answer
    Mohana Yadav Profile Picture
    Mohana Yadav 60,199 Super User 2025 Season 1 on at
    RE: Remove the previous extension - Error AL0334

    could you please provide full error message.

    maybe one of your partner extension has already extended the report?

  • account2@hibeaubc Profile Picture
    account2@hibeaubc 5 on at
    RE: Remove the previous extension - Error AL0334

    Hi Mohana,

    Unfortunately, the extension is not appearing under extension management. All extensions seemed published by either MS or our partner company.

  • account2@hibeaubc Profile Picture
    account2@hibeaubc 5 on at
    RE: Remove the previous extension - Error AL0334

    Hi Mohana,

    Thanks for the rapid reply. I will try this method and get back if this works. We have about 10 sandboxes so it may take some time to find the one with the extension.

  • Suggested answer
    Mohana Yadav Profile Picture
    Mohana Yadav 60,199 Super User 2025 Season 1 on at
    RE: Remove the previous extension - Error AL0334

    Looks like you did not uninstall and unpublish the app in Business Central.

    Search for "Extension Management" page in business central

    Find the extension with name "Prod. Order - Job Card" and uninstall first and then unpublish

    pastedimage1671088295187v1.png

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