Dynamics 365 Business Central Extensions – Under the hood

Working with extensions, I face the same problems as everybody else. I feel that I'm limited in my work, not knowing what the other extensions are doing.

A year ago, I released the Extension Details that can help developers identify which object numbers and fields have been used by other developers.

Over the last year I have continued to develop the extension details solution to help me, and maybe it can help others too.

"Extension Details" 2.0 have now been rebuilt:

  • It now only uses two pages 50095 and 50096.
  • It can identify, which objects comes from C/Side and which comes from extensions.
  • You can filter for objects only in the development range (50.000-99.999)
  • You can filter the different object types (except Table Extensions ).
  • You can get a list of all fields in the tables/Table extensions.

    The standard tables are shown including the extension fields (specifying which extension they origin from)

    The table extensions fields are shown with only the added fields.

  • You can run both standard and extension objects
  • You can run both standard and extension tables viewing and editing the values directly. (Thank you, Moustapha El Houry from Navet)
  • You can export extension objects as .al files.
  • You can export code from standard objects (except variables)
  • If a program is installed associated with the .al files, like Visual Studio Code, then that program will be opened.

Extension Details 2.0 looks like this:

The Show Options filters Extension objects, Standard Objects and All objects.

Show Fields opens a new window, this is a Table Extension:

And a table in an extension:

Running a table in an extension looks like this:

Notice that it is editable

And lastly, this is how the code looks for the table 1070 – This is a Version 1.0 extension, therefore the odd format:


A Version 2.0 extension would look like this:

 And lastly, a standard Codeunit 80 Sales-Post:

And the code from Table 37 Sales Line:

The objects are made for Dynamics NAV 2018 or Business Central. They are provided "as is" and no warranty is given.

They can be downloaded here.


I hope you can benefit from this.