SOL_TEST staking in sandbox: Tenant is not allowed to do this operation

We’re currently testing in the sandbox environment and attempting to use the PROGRAM_CALL operation to submit base64-encoded Solana staking transactions.

However, we receive the error:
Tenant with id ... is not allowed to do this operation (code 16000).

Our transaction policy includes an Allow rule for type Raw, and we can confirm that basic transfer operations work.
Could you please confirm if PROGRAM_CALL is enabled for our tenant, or enable it if needed?

Tenant ID: 37ee25a3-9cf2-4fd7-b59e-e119f87f68c4
Environment: Sandbox