Contradicting errors reported for "grafana_synthetic_monitoring_check_alerts" resource

[karol-gro]

Extension Version

2.37.7 (Release) and 2.38.2026021014 (Pre-release)

VS Code Version

Version: 1.109.4 (user setup)
Commit: c3a26841a84f20dfe0850d0a5a9bd01da4f003ea
Date: 2026-02-16T15:35:57.932Z
Electron: 39.3.0
ElectronBuildId: 13313481
Chromium: 142.0.7444.265
Node.js: 22.21.1
V8: 14.2.231.22-electron.0
OS: Windows_NT x64 10.0.26200

Operating System

Windows 11 Business Version 25H2 OS build 26200.7840 Experience Windows Feature Experience Pack 1000.26100.291.0

Terraform Version

Terraform v1.12.2 on windows_amd64

Steps to Reproduce

1. Create a new tmp.tf file, with following content

terraform {
  required_providers {
    grafana = {
      source  = "grafana/grafana"
      version = "~> 4.25"
    }
  }
}


provider "grafana" {
  alias               = "cloud"
  url                 = "https://example.grafana.net"
  oncall_url          = "https://oncall-prod-eu-west-0.grafana.net/oncall"
  oncall_access_token = "123"
  auth                = "123"
}


resource "grafana_synthetic_monitoring_check_alerts" "healthcheck_a" {
  provider = grafana.cloud
  check_id = 123
  alerts = [
    {
      name        = "ProbeFailedExecutionsTooHigh"
      period      = "5m" # Alert if down for 5 minutes
      threshold   = 1.0  # 100% failure rate
      runbook_url = "http://example.com/runbook"   # Optional: Add runbook URL for handling alerts
    }
  ]
}

2. Create another file, in another dir with this content

terraform {
  required_providers {
    grafana = {
      source  = "grafana/grafana"
      version = "~> 4.25"
    }
  }
}


provider "grafana" {
  alias               = "cloud"
  url                 = "https://example.grafana.net"
  oncall_url          = "https://oncall-prod-eu-west-0.grafana.net/oncall"
  oncall_access_token = "123"
  auth                = "123"
}


resource "grafana_synthetic_monitoring_check_alerts" "healthcheck_a" {
  provider = grafana.cloud
  check_id = 123
  lol= ziom
  alerts {
      name        = "ProbeFailedExecutionsTooHigh"
      period      = "5m" # Alert if down for 5 minutes
      threshold   = 1.0  # 100% failure rate
      runbook_url = "http://example.com/runbook"   # Optional: Add runbook URL for handling alerts
  }
}

Expected Behavior

Both files show no error (as both pass correctly the terraform validate test)

Actual Behavior

First file reports error Too few blocks specified for "alerts": At least 1 block(s) are expected for "alerts" Terraform

Second file reports error Required attribute "alerts" not specified: An attribute named "alerts" is required here Terraform

Terraform Configuration

Project Structure

Gist

No response

Anything Else?

Seems like both formats are accepted by terraform, but both are required by Terraform VS Code plugin, so no matter which I choose, it will report an error

Workarounds

Just ignore the UI error, terraform command works perfectly

References

No response

Help Wanted

• I'm interested in contributing a fix myself

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