SPSiteManager API Endpoint not creating requested site

Target SharePoint environment

SharePoint Online

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

SharePoint REST API

Developer environment

None

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

Power Automate workflow

Describe the bug / error

We are maintaining a Power Automate workflow for creating a new SharePoint site. We recently had a scenario where a request was submitted for the creation of a SharePoint site, and the SPSiteManager/Create endpoint (https://tenantname.sharepoint.com/_api/SPSiteManager/Create) returned a success response. However, the site was not created. See below for the request body and response

Request Body:
{ "request": { "Title": "Post Luxembourg-Wallix Assessment", "Url": "https://tenantname.sharepoint.com/sites/Post Luxembourg-Wallix Assessment", "Description": "Site used to work collaboratively and store all documents, deliverables related to the assessment", "Owner": "Owner's email address", "Lcid": 1033, "WebTemplate": "STS#3", "SiteDesignId": "53e46c84-923a-406f-86ff-1fdc9dc67ae4", "ShareByEmailEnabled": true } }

Response Body:
{ "d": { "Create": { "__metadata": { "type": "Microsoft.SharePoint.Portal.SPSiteCreationResponse" }, "SiteId": "", "SiteStatus": 3, "SiteUrl": "" } } }

Steps to reproduce

Expected behavior

Create site with SiteStatus code value of '2'