@Susmitha Vankayalapati - Thanks for the question and using MS Q&A platform.
It does not matter which subscription Azure Key Vault sits in as long as you/the used identity have the permissions to read the secrets. You can either link it to a secret scope in Databricks (Setup: Secret scopes - Azure Databricks | Retrieve: Secret workflow example - Azure Databricks ) or directly retrieve the secret via the SDK, e.g. Python (Quickstart – Azure Key Vault Python client library – manage secrets ) .
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