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The Microsoft_Application.app file

The Microsoft_Application.app file is included with Business Central and is located in the \Applications\Application\Source folder. The Microsoft_Application.app file logically encapsulates all of the extensions making up a solution, for example, version 16.0.0.0 of the base and system application package files, and it provides a convenient way to define and refer to this solution identity.

Note

In previous versions the references to base and system application were stated explicitly under dependencies in the app.json file of the extension. Instead you must now use the Application version property in the app.json file. For more information, see JSON Files.

The file name of the reference is Microsoft_Application.app and in the app.json file of the application package file, the name is Application. For code-customized base applications that have their own app ID, the Microsoft_Application.app file can be modified to reference the app ID of the code-customized base applications instead. This allows any extensions that are dependent on the Application to resolve to the custom app ID.

Note

The partner who redefines the application must ensure that extensions that are dependent on the Application compile and work. This can be ensured, for example, by not introducing any breaking changes.

Important

If you have modified the Microsoft_Application.app file, you can rename the file name. You should change information about the publisher and it's important to keep "name": "Application" in the extension, which is what is being checked for in terms of symbols references. It's also important to keep the propagateDependencies set to true. The version must be set to the version of the Microsoft base application with which it is compatible. The id must be changed to reference the app ID of the code-customized base application.

Changing the app.json file for a code-customized base application

The app.json file of the Microsoft_Application.app file looks like the following example for Business Central version 15.3.

{
    "id":  "c1335042-3002-4257-bf8a-75c898ccb1b8",
    "name":  "Application",
    "publisher":  "Microsoft",
    "version":  "15.3.40074.40254",
    "propagateDependencies":  true,
    "logo":  "ExtensionLogo.png",
    "privacyStatement":  "https://go.microsoft.com/fwlink/?LinkId=724009",
    "EULA":  "https://go.microsoft.com/fwlink/?linkid=2009120",
    "help":  "https://go.microsoft.com/fwlink/?linkid=2104024",
    "url":  "https://go.microsoft.com/fwlink/?LinkId=724011",
    "dependencies":  [
                         {
                             "appId":  "437dbf0e-84ff-417a-965d-ed2bb9650972",
                             "name":  "Base Application",
                             "publisher":  "Microsoft",
                             "version":  "15.3.0.0"
                         },
                         {
                             "appId":  "63ca2fa4-4f03-4f2b-a480-172fef340d3f",
                             "name":  "System Application",
                             "publisher":  "Microsoft",
                             "version":  "15.3.0.0"
                         }
                     ],
    "screenshots":  [

                    ],
    "platform":  "15.0.0.0",
    "showMyCode":  true,
    "brief":  "Application (W1)"
}

The Microsoft_Application.app file can be edited to use the code-customized base application as a dependency. To do so, update the "dependencies": [] section and change the "appId": "437dbf0e-84ff-417a-965d-ed2bb9650972" to the appId of your code-customized base application. You should update the "name" and "publisher" information to match too. Below is an example of a modified Microsoft_Application.app file using the required changes listed above.

{
    "id":  "<appId of the Application app>",
    "name":  "Application",
    "publisher":  "PartnerSolutions",
    "version":  "15.3.0.0",
    "propagateDependencies":  true,
    "logo":  "ExtensionLogo.png",
    "privacyStatement":  "https://go.microsoft.com/fwlink/?LinkId=724009",
    "EULA":  "https://go.microsoft.com/fwlink/?linkid=2009120",
    "help":  "https://go.microsoft.com/fwlink/?linkid=2104024",
    "url":  "https://go.microsoft.com/fwlink/?LinkId=724011",
    "dependencies":  [
                         {
                             "appId":  "<appId of the code-customized base app>",
                             "name":  "Customized Base Application",
                             "publisher":  "PartnerSolutions",
                             "version":  "15.3.0.0"
                         },
                         {
                             "appId":  "63ca2fa4-4f03-4f2b-a480-172fef340d3f",
                             "name":  "System Application",
                             "publisher":  "Microsoft",
                             "version":  "15.3.0.0"
                         }
                     ],
    "screenshots":  [

                    ],
    "platform":  "15.0.0.0",
    "showMyCode":  true,
    "brief":  "Application (W1)"
}

Up-taking the Application app

The Application app logically encapsulates apps making up a solution (such as the Base Application and System Application), and provides an abstraction to protect the AppSource and per-tenant (PTEs) extensions running on top of that solution from not being able to resolve dependencies to these apps.

When using it, future refactoring of the referenced solution; like extracting some areas into separate apps, or changes to the identities of the apps, which comprise the solution, won't be forcing all other dependent apps to change or add new apps to their dependencies, as these dependencies will be resolved implicitly via the reference to the Application app.

Additionally, it's meant to simplify the on-premises upgrade scenarios, when customizations are extracted from the Base Application into extensions. And finally it makes it possible to make the same apps available not only to the Business Central customers, but also to the customers of the rich, vertical solutions called Embed Apps, which are also running in the Business Central service.

To enable these benefits, all you need to do, as an AppSource or PTE app owner, is to add the "application" property in the app.json file of your app and provide the minimum Microsoft Base Application version that this app is compatible with. For more information, see JSON Files. Also, you need to remove the direct dependencies to the Base Application and System Application from the app.json file. See the following example:

{
    "id":  "e5645aaf-74be-453a-ab50-2e34ec3ee53c",
    "name":  "Fabrikam Gadgets Management",
    "publisher":  "Fabrikam",
    "version":  "15.3.41056.29085",
    "logo":  "ExtensionLogo.png",
    "privacyStatement":  "https://go.microsoft.com/fwlink/?LinkId=724009",
    "EULA":  "https://go.microsoft.com/fwlink/?linkid=2009120",
    "help":  "https://go.microsoft.com/fwlink/?linkid=2104024",
    "url":  "https://go.microsoft.com/fwlink/?LinkId=724011",
    "application": "15.3.0.0",
    "dependencies":  [
                     ],
    "screenshots":  [

                    ],
    "platform":  "15.0.0.0",
    "showMyCode":  true,
    "brief":  "Fabrikam Gadgets Mgt."
}

Important

Soon up-taking the Application app will also be a mandatory requirement for AppSource apps, enforced by the AppSource technical validation. Thus, it is highly recommended to change the existing AppSource apps at first convenience, for example with your next planned app update, and adopt the "application" property for all new AppSource apps. We also recommend up-taking the Application app for the customized Base Applications on-premise, and per-tenant-extensions (PTEs) that you use in the Business Central online environments.

JSON Files
Install an Update
App Identity