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Dynamics 365 Community / Forums / Small and medium business | Business Central, N... / AL Compilation error: ...
Small and medium business | Business Central, N...
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AL Compilation error: "The namespace 'TableName' is unknown" when creating a flowfield

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Posted on by Ghetz 2,983
So I create an extension with a table object. Then I want to add a flowfield to the /Sales invoice Header/ based on this new table, and I get compilation error /The namespace 'TableName' is unknown/ (AL0791), so I can't compile my extension. Any ideas? I've noticed this only happens when calcformula es /count/ or /exists/; if I use sum, there is no compiler error.
 
 
 
  • Suggested answer
    YUN ZHU Profile Picture
    YUN ZHU 76,221 Super User 2024 Season 2 on at
    AL Compilation error: "The namespace 'TableName' is unknown" when creating a flowfield
    Hi, I briefly summarized it, and I hope the following information can give you some tips.
    Dynamics 365 Business Central: The namespace ‘xxxx’ is unknown in CalcFormula Property
     
    Thanks.
    ZHU
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    Saurav.Dhyani Profile Picture
    Saurav.Dhyani 14,178 Super User 2024 Season 2 on at
    AL Compilation error: "The namespace 'TableName' is unknown" when creating a flowfield
    Hi,
     
    It seems a bug, I would recommend reporting it to Microsoft.
     
    Regards,
    Saurav Dhyani
  • Suggested answer
    YUN ZHU Profile Picture
    YUN ZHU 76,221 Super User 2024 Season 2 on at
    AL Compilation error: "The namespace 'TableName' is unknown" when creating a flowfield
    I simply tested it and found that this problem does exist. .
     
    But since it is Count, if you remove the following "No." field, the error will disappear.
     
    Hope this helps.
    Thanks.
    ZHU
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    Saurav.Dhyani Profile Picture
    Saurav.Dhyani 14,178 Super User 2024 Season 2 on at
    AL Compilation error: "The namespace 'TableName' is unknown" when creating a flowfield
    Hi,
     
    Check all objects in your extension.
     
    There seems an object where you have defined namespaces (it may happen if you use AZ/AL Extension to develop new objects).
     
    If you find namespace my table, remove that from that object.
     
    That should fix the problem.
     
    Regards,
    Saurav Dhyani
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    Mohamed Amine Mahmoudi Profile Picture
    Mohamed Amine Mahmoudi 11,955 Super User 2024 Season 2 on at
    AL Compilation error: "The namespace 'TableName' is unknown" when creating a flowfield
    Hi @Ghetz,
     
    I think you must add a name space Microsoft.Sales.History.
    using Microsoft.Sales.History;
    Best regards,
    Mohamed Amine MAHMOUDI

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