Developing extensions in Dynamics NAV, it is possible to add two extensions that are adding the same field numbers to a solution. No warnings are given, and it is not possible to get an overview of which object numbers or field numbers the other extensions are adding. Let’s try an example: Now I publish and install the extension together with a page extension: In the Extension Management, it looks like this: Nothing new about that. Now, let’s try to install another extension with the same field number used: Now I publish and install the extension together with another page extension: It is possible to publish the extension and even install it in the tenant but starting the Windows client, I get the following error: It is not possible to start the windows client again until I have uninstalled the extension through PowerShell: In all the workshops I have conducted until now, I have been given the question: ”How do I see which object numbers and field numbers that are already used in the solution?” I haven’t found any standard solution to this, so I made one myself: Install two objects: Table 50149 Extension Detail Information Page 50149 Extension Detail Information (And No, it is not possible to create as extension due to the tables I access.) Run the page and it will generate detailed information on all apps that are published (installed or not): Now you can filter for the desired table: The object can be downloaded here: http://ba-consult.dk/downloads/ExtensionDetails.zip Have fun [H]
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