I can't add new transition policy in sandbox

I’m experiencing an issue where the Transaction Authorization Policy (TAP) editor is disabled/read-only in my Fireblocks sandbox workspace, preventing me from adding a critical rule for vault transfers.

Current Situation:

  • Workspace: Fireblocks Sandbox (sandbox.fireblocks.io)

  • Issue: Cannot create/edit TAP rules — the policy editor appears grayed out/disabled

  • Impact: Gas-station auto-fuel and vault payment collections are blocked

What I Need:
I need to add a single ALLOW rule to enable all vault-to-vault transfers:
Action: ALLOW
Transaction type: Transfer
Asset: ALL ()
Initiator: ALL (
)
Source: Vault Account → ALL ()
Destination: Vault Account → ALL (
)
Amount: No minimum

Use Case:

  • Each customer order creates a new vault

  • Fireblocks gas-station (vault 0) needs to auto-fuel these vaults with small BNB amounts for transaction fees

  • Completed payments need to be swept back to omnibus vault (vault 0)

  • This requires vault-to-vault transfer permission

Questions for Support:

  1. Why is the TAP editor disabled? Do I need to enable a specific role/permission for the API user?

  2. Can you manually add this rule to my workspace policy?

  3. Is there a way to enable Policy Editor permissions for my API key so I can manage rules programmatically?

Technical Details:

  • API Key (first 10 chars): [your API key first 10 chars]

  • Environment: Sandbox

  • Asset: USDT_BSC_TEST (BEP-20 on BSC testnet)

  • Vaults: Gas-station (0), Omnibus (0), Order vaults (auto-created)