Expose AppService location and EUDB membership on Environment Information

[t-prda]

Draft for discussion — opening this to get input on whether these platform properties are safe to surface as permanent public System Application APIs. Not intended to merge as-is.

What

Adds two procedures to the public Environment Information codeunit (457) and its Environment Information Impl. (3702):

• GetApplicationServiceLocation(): Text -> wraps NavTenantSettingsHelper.GetAppServiceLocation() (e.g. "Canada Central")
• IsApplicationServiceInEUDB(): Boolean -> wraps NavTenantSettingsHelper.GetAppServiceInEUDB()

Why

These two values are currently only reachable via the platform DotNet NavTenantSettingsHelper type. Referencing that DotNet type forces an app to target: OnPrem (DotNet interop is disallowed for target: Cloud). Surfacing them on the managed System Application API lets apps read hosting location + EU Data Boundary membership without any DotNet reference.

Concrete driver: the Expense Agent app uses GetAppServiceLocation() / GetAppServiceInEUDB() in EAHttpClient (both IsSaaS()-guarded) to build the ERP-config payload for the Expense Agent service, and is target: OnPrem largely because of this single DotNet dependency.

Background / context

• GetAppServiceLocation was added to the platform helper in Oct 2025 (BC-Platform PR 230834 / Bug 610944, "Expose Application Service properties to be available in AL").
• GetAppServiceInEUDB was added Jun 2026 (BC-Platform #44837 / AB#638032) as the platform leg of a 3-PR EUDB stack (Platform + NAV + BC-ExpenseAgent).
• The whole AppServiceProperties getter family (Id/Location/Geo/Family/PlatformMajorMinor/CountryCodes, plus InEUDB) is currently un-wrapped on codeunit 457, consumed only via first-party DotNet interop so far.

Open questions for reviewers

• Are Location and EUDB membership safe/appropriate to expose as permanent public APIs (versioning/support commitment)?
• Naming: GetApplicationServiceLocation / IsApplicationServiceInEUDB vs. mirroring the platform names?
• Any behavior expectations OnPrem/Docker (both currently return empty/false off-SaaS)?

Related work item: AB#643989

[Copilot]

Pull request overview

This PR extends the System Application’s public Environment Information API (codeunit 457) to expose two platform-backed tenant hosting properties—Application Service location and EU Data Boundary (EUDB) membership—via Environment Information Impl. (codeunit 3702), enabling Cloud-targeted apps to read these values without DotNet interop.

Changes:

• Added GetApplicationServiceLocation(): Text to expose the tenant’s Application Service region string (e.g., “Canada Central”).
• Added IsApplicationServiceInEUDB(): Boolean to expose whether the tenant’s Application Service is within the Microsoft EU Data Boundary.
• Implemented both APIs in the internal implementation codeunit by delegating to NavTenantSettingsHelper.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/System Application/App/Environment Information/src/EnvironmentInformationImpl.Codeunit.al	Adds implementation procedures that call NavTenantSettingsHelper for AppService location and EUDB membership.
src/System Application/App/Environment Information/src/EnvironmentInformation.Codeunit.al	Adds two new public procedures (with XML docs) on Environment Information that forward to the implementation codeunit.

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