The Name of your Managed Identity is "ADF-SLB". In the Access policy you grant permissions to "Data Factory". Try to add "ADF-SLB" in the access policy.
Unable to get secrets in data factory
Chun Hanssen
90
Reputation points
I was trying to connect ADF with secret for WEB API GET operation
I have granted the secret access to AD:
Connection to linked service was successful but connection to secret failed
- Linked service (successful)
- Secret (failed)