SPSiteManager API started returning an unexpected Status code

[kstat]

Target SharePoint environment

SharePoint Online

What SharePoint development model, framework, SDK or API is this about?

SharePoint REST API

Developer environment

Windows

What browser(s) / client(s) have you tested

• 💥 Internet Explorer
• 💥 Microsoft Edge
• 💥 Google Chrome
• 💥 FireFox
• 💥 Safari
• mobile (iOS/iPadOS)
• mobile (Android)
• not applicable
• other (enter in the "Additional environment details" area below)

Additional environment details

No response

Describe the bug / error

GET request to /_api/SPSiteManager/status for a non-existent Site URL appears to now be returning a Status Code value of '1' (i.e., Provisioning) as opposed to expected Status Code value of '0' (i.e., Not Found), as per status code definitions here.

Note that this API call was correctly returning Status Code '0' until last week, and appears to have started returning a different response as of Friday 3/27.

Steps to reproduce

1. Establish a PnP PowerShell session with at-least Write access to the root site in tenant.
2. Invoke PnP PS cmdlet (or you can use any other method to invoke a GET request to SPO REST API)

Invoke-PnPSPRestMethod -Method Get -Url "https://tenant.sharepoint.com/_api/SPSiteManager/status?url='https://tenant.sharepoint.com/sites/doesnotexist'"

Expected behavior

Expected response is:

SiteId	SiteStatus	SiteUrl
	0

Received response is:

SiteId	SiteStatus	SiteUrl
	1

[Ashlesha-MSFT]

Hello @kstat,
Thank you for bringing this issue to our attention. We will look into it and get back to you shortly.
If you don’t receive a reply within two working days, please use this escalation form to escalate.

[aztecchiefXochitlquetzal]

You are unauthorized and dismissed. ```