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You can only refer to stacks within the same backend ~when using S3~

<https://github.com/pulumi/pulumi/issues/2208#issuecomment-544184375>

<https://martinjt.me/2021/03/04/pulumi-multiple-projects-with-custom-backends/|https://martinjt.me/2021/03/04/pulumi-multiple-projects-with-custom-backends/>

It's for azure, but it should clear it up.

In essence, you need to use the same blob/file for each project and then you can reference between them.  They also need to use the same passphrase.

<@U01R1HT1U8G>: That’s great information - exactly what I was looking for. Thanks!

Hello, am trying to replicate the same in python for local backend
```from pulumi import StackReference

stack_ref = StackReference(name="stack-reference",stack_name = "project.mystack")
s3_name = stack_ref.get_output("s3_bucket")
print(s3_name)```
can u please let me know if i am missing something here..