[ISSUE] Issue with `databricks_external_location` resource about terraform-provider-databricks

[nkvuong]

@SebGay the issue is that the sp that is executing TF does not have permission to read the external location. The error is misleading which hides the root cause

[SebGay]

@nkvuong thank you very much for your help. I will leave it to your discretion to close the issue or if a fix with a more precise error and documentation note is due.

For others - the issue was specifically that by specifying the owner as a group that did not contain the service principal, the service principal lacked the READ_FILES grant that is required for validation and further usage. Instead I removed the owner argument and simply did an external location grant of ALL_PRIVILEGES for that group.