Troubleshooting Sitecore XM Cloud: Deployment Process Halted with Status Code 409 - Project and Environment Already in Deployment.

Lately, during the construction and deployment of the UAT environment, all builds were stuck in the queue and failed to respond. Despite numerous attempts to delete the builds, the issue persisted.

After posting about the problem in the Slack channel, we were unable to find a definitive solution. Consequently, we raised a Sitecore ticket, seeking assistance with the issue.

Slack Posted Question - I'm currently encountering an issue with deploying a build on the UAT environment. Despite waiting for several hours, the build remains stuck in the queue.

After canceling the build and attempting to restart the environment, it' showing an message  that the build is still running and it's preventing the restart.

Now, every build is getting queued up. Do we have any options available to resolve this issue? the same branch was successfully deployed to a different environment (Dev) without any issues.

I would greatly appreciate it if anyone who has experienced a similar problem could share their suggestions.

Console error was 

{

    "title": "Not Found",

    "status": 404,

    "detail": "Deployment entity not existing for deploymentId XXXXXXXXXX",

    "traceId": "XXXXXXXXXXXXXXXXXX"

}

There was an issue with our service connection, due to which environment was wrongfully marked as having a running deployment, got fix now.

Slack Reference -  Slack Conversation Link