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Hotfix an AppSource app

A hotfix is generally the submission of a new version of an AppSource app outside the planned scheduling, whether the hotfix applies to the latest major, latest minor app, or a previous version.

However, for AppSource apps, the term hotfix is used to refer to the submission of a new version, which isn't the latest version of the app. For example, if you have version 2.0.0.0 of your app available in AppSource and you submit a new version 1.5.0.0, then version 1.5.0.0 is considered a hotfix because 1.5.0.0 isn't the latest version available.

Important

When you submit a hotfix, don't update the version of your offer in Partner Center to match the hotfix version submitted because the version shown in Partner Center on the AppSource marketplace listing shows the latest version.

Note

The concept of hotfix is tied to the country/region for which the version of your app is available. If you have different versions of your apps in some countries/regions, your submission might be a hotfix for one country/region but not another. However, we generally don't recommend having different versions per country/region.

Against which releases is a hotfix submission validated?

When you submit a hotfix of your AppSource app, the service will automatically detect among the existing versions, which is the next version of your app that your customers will be upgraded to when their environment is upgraded to the next major/minor. The service then validates your submission up to the Business Central release for which this extension is available.

The minimum release targeted by the submission is computed based on the application property similar to any other submission.

Example 1 - One version targeting the next release

Let's consider that you have the following versions of your app publicly available in AppSource:

Version Target Business Central version
1.0.0.0 21.0
2.0.0.0 22.0

You're now submitting a new version 1.5.0.0 with the application property set to 21.0.0.0.

On their upgrade to the next major, your customers on Business Central version 21 who will be running version 1.5.0.0 would then be upgraded to version 2.0.0.0, which targets Business Central 22.0, so version 1.5.0.0 will be validated for all Business Central releases from 21.0 (included) to 22.0 (excluded).

Example 2 - Multiple versions targeting the next release

Let's consider that you have the following versions of your app publicly available in AppSource:

Version Target Business Central version
1.0.0.0 21.0
2.0.0.0 22.0
3.0.0.0 22.0

You're now submitting a new version 1.5.0.0 with the application property set to 21.0.0.0.

On their upgrade to the next major, your customers on Business Central version 21 who will be running version 1.5.0.0 would then be upgraded to version 3.0.0.0, which targets Business Central 22.0, so version 1.5.0.0 is validated for all Business Central releases from 21.0 (included) to 22.0 (excluded).

Example 3 - Multiple versions targeting the next releases

Let's consider that you have the following versions of your app publicly available in AppSource:

Version Target Business Central version
1.0.0.0 21.0
2.0.0.0 22.0
3.0.0.0 23.0

You're now submitting a new version 1.5.0.0 with the application property set to 21.0.0.0.

On their upgrade to the next major, your customers on Business Central version 21 who will be running version 1.5.0.0 would then be upgraded to version 2.0.0.0, which targets Business Central 22.0, so version 1.5.0.0 is validated for all Business Central releases from 21.0 (included) to 22.0 (excluded).

Example 4 - Submitting a hotfix with application equal to the next versions

Let's consider that you have the following versions of your app publicly available in AppSource:

Version Target Business Central version
1.0.0.0 21.0
2.0.0.0 22.0

You're now submitting a new version 1.5.0.0 with the application property set to 22.0.0.0.

The technical validation should then validate version 1.5.0.0 for all Business Central releases from 22.0 (included) to 22.0 (excluded) which is not possible. In this case, the technical validation ignores the upper limit and validates the submission for all releases of Business Central.

Submitting a version which is not the latest for the targeted Business Central is not recommended. Instead, you should submit a new latest version 2.1.0.0 or 3.0.0.0.

Note that version 1.5.0.0 wouldn't be available to any customers, except when using Admin APIs, because:

  • customers running on Business Central version 21.0 aren't able to upgrade to this version because of the target Business Central version,
  • customers running on Business Central version 22.0 get version 2.0.0.0, which is higher.

Example 5 - Submitting a hotfix with application higher than the next versions

Let's consider that you have the following versions of your app publicly available in AppSource:

Version Target Business Central version
1.0.0.0 21.0
2.0.0.0 22.0
3.0.0.0 23.0

You're now submitting a new version 1.5.0.0 with the application property set to 23.0.0.0.

The technical validation should then validate version 1.5.0.0 for all Business Central releases from 23.0 (included) to 22.0 (excluded) which is not possible. In this case, the technical validation ignores the upper limit and validates the submission for all releases of Business Central.

Submitting a version which is not the latest for the targeted Business Central is not recommended. Instead, you should submit a new latest version 3.1.0.0 or 4.0.0.0.

Note that version 1.5.0.0 wouldn't be available to any customers, except when using Admin APIs, because:

  • customers running on Business Central version 21.0 and 22.0 aren't able to upgrade to this version because of the target Business Central version,
  • customers running on Business Central version 23.0 get version 3.0.0.0, which is higher.

What is the extra validation done for a hotfix submission?

To ensure that your customer can upgrade from your hotfix version to the next version available in AppSource, we're validating for breaking changes the next version of your app that would be selected during an environment upgrade to the next minor/major with your hotfix version.

Example 1 - One version targeting the next release

Let's consider that you have the following versions of your app publicly available in AppSource:

Version Target Business Central version
1.0.0.0 22.0
2.0.0.0 23.0

If you submit a new version 1.5.0.0 with the application property set to 22.0.0.0, the technical validation verifies that:

  • There are no breaking changes between 1.0.0.0 and 1.5.0.0, and that
  • There are no breaking changes between 1.5.0.0 and 2.0.0.0.

Example 2 - Multiple versions targeting the next release

Let's consider that you have the following versions of your app publicly available in AppSource:

Version Target Business Central version
1.0.0.0 22.0
2.0.0.0 23.0
3.0.0.0 23.0

If you submit a new version 1.5.0.0 with the application property set to 22.0.0.0, the technical validation verifies that:

  • There are no breaking changes between 1.0.0.0 and 1.5.0.0, and that
  • There are no breaking changes between 1.5.0.0 and 3.0.0.0.

Example 3 - Multiple versions targeting the next releases

Let's consider that you have the following versions of your app publicly available in AppSource:

Version Target Business Central version
1.0.0.0 21.0
2.0.0.0 22.0
2.1.0.0 22.0
3.0.0.0 23.0

If you submit a new version 1.5.0.0 with the application property set to 21.0.0.0, the technical validation verifies that:

  • There are no breaking changes between 1.0.0.0 and 1.5.0.0, and that
  • There are no breaking changes between 1.5.0.0 and 2.1.0.0.

What kind of changes can't be part of a hotfix?

Since the AppSourceCop will validate for breaking changes, you can't add code that contains breaking changes with the previous and next version selected for validation. This includes, among others, removing nonobsolete objects, removing table fields, reducing the accessibility of an object.

As part of a hotfix, you also can't add new AL objects (pages, reports, codeunits, etc.) or new elements (procedure, actions, fields, etc.) that contribute to your extension's public API unless they're also part of the next version selected for the validation, or they're obsolete pending.

Note

Tables and table fields can be added as part of a hotfix only if they are also defined in the next version selected for the validation. If they are not defined in the next version, introducing them as obsolete pending or obsolete removed will also not work.

Example 1 - How to add procedures in hotfixes

Let's consider that you have the following versions of your app publicly available in AppSource:

Version Target Business Central version
1.0.0.0 21.0
2.0.0.0 22.0

Version 1.0.0.0 of your app is defined as follows:

codeunit 1000000 MyCodeunit
{
    procedure MyPublicProcedureFromV1()
    begin
    end;
}

Version 2.0.0.0 of your app is defined as follows:

codeunit 1000000 MyCodeunit
{
    procedure MyPublicProcedureFromV1()
    begin
    end;

    procedure MyPublicProcedureFromV2()
    begin
    end;
}

If you submit a new version 1.5.0.0, you're then allowed to add the following procedures:

  • local procedure MyNewLocalProcedure() because it's not public.
  • [Obsolete] procedure MyNewObsoleteProcedure() because it's obsolete pending.
  • MyPublicProcedureFromV2() because it's already defined in the next version.

However, you aren't allowed to define a new procedure procedure MyNewPublicProcedure(), because the service detects that upgrading from version to 1.5.0.0 to version 2.0.0.0 results in the deletion of a public procedure.

Example 2 - How to add AL objects in hotfixes

Let's consider that you have the following versions of your app publicly available in AppSource:

Version Target Business Central version
1.0.0.0 21.0
2.0.0.0 22.0

Version 1.0.0.0 of your app is defined as follows:

codeunit 1000000 MyCodeunitFromV1
{
    // Some business logic
}

Version 2.0.0.0 of your app is defined as follows:

codeunit 1000000 MyCodeunitFromV1
{
    // Some business logic
}

codeunit 1000001 MyCodeunitFromV2
{
    // Some business logic
}

If you submit a new version 1.5.0.0, you're then allowed to add the following codeunits:

  • codeunit 1000002 MyInternalCodeunit { Accessibility = Internal; } because it's not public.
  • codeunit 1000002 MyObsoleteCodeunit { ObsoleteState = Pending; } because it's obsolete pending.
  • codeunit 1000001 MyCodeunitFromV2 { } because it's already defined in the next version.

However, you aren't allowed to define a new procedure codeunit 1000002 MyNewPublicCodeunit { }, because the service detects that upgrading from version to 1.5.0.0 to version 2.0.0.0 results in the deletion of a public codeunit.

Example 3 - How to handle hotfixes when objects are obsoleted and removed within the next release

Important

This example demonstrates the impact of obsoleting and removing objects within the same release. The technical validation of AppSource submission does not enforce a specific timeline when deprecating code, but we recommend following the approach documented in Microsoft Timeline for Deprecating Code in Business Central

Let's consider that you have the following versions of your app publicly available in AppSource:

Version Target Business Central version
1.0.0.0 21.0
2.0.0.0 22.0
2.1.0.0 22.0

Version 1.0.0.0 of your app is defined as follows:

codeunit 1000000 MyCodeunitFromV1
{
    // Some business logic
}

Version 2.0.0.0 of your app is defined as follows:

codeunit 1000000 MyCodeunitFromV1
{
    ObsoleteState = Pending;
    ObsoleteReason = 'This will be removed in version 2.1.0.0';

    // Some business logic
}

Version 2.1.0.0 of your app is defined without MyCodeunitFromV1.

If you submit a new version 1.5.0.0, it's validated for breaking changes with version 1.0.0.0 and version 2.1.0.0. Independently of your changes, since MyCodeunitFromV1 was removed from version 2.1.0.0, it must now be marked as ObsoletePending in version 1.5.0.0.

Technical Validation FAQ