Google Cloud Datastore Index not found even if it is set - node.js

Question

I have a kind named 'audit' and has many properties however, I need to index only certain properties and in a specific order since I mostly query:
select DISTINCT ON (traceId) * from audit where tenantId='123'
When I try to run this in the GCP console it throws an error:
GQL Query error: Your Datastore does not have the composite index (developer-supplied) required for this query.
I also tried running this from a node js application that uses #google-cloud/datastore package, and datastore throws error:
9 FAILED_PRECONDITION: no matching index found. recommended index is:
- kind: audit
properties:
- name: tenantId
- name: traceId
The index.yaml is created using terraforms and the contents are:
indexes:
- kind: "audit"
properties:
- name: "tenantId"
- name: "traceId"
# AUTOGENERATED
# This index.yaml is automatically updated whenever the Cloud Datastore
# emulator detects that a new type of query is run. If you want to manage the
# index.yaml file manually, remove the "# AUTOGENERATED" marker line above.
# If you want to manage some indexes manually, move them above the marker line.
With this index.yaml file the local datastore emulator works as expected.
In the GCP console, I see the index being set and is in serving status.

Answer 1

It seems you have additional quotes, " around your Datastore property names in the index.yaml file.
indexes:
- kind: Cat
properties:
- name: name
- name: age
Please refer to the documentation on correct syntax.
On the Google Provider Terraform side, there is a ~> Warning mentioned, make sure to follow it to create a compatible database type. Refer here for more details on compatibility settings.