Transaction not yet indexed

TZ3a7JnNUtak4JgCb5dKiQVHVRfxtzB2EwqYmwYMUb8RwVpccLS2F7ZuSfdefnDUsxTrqRLGQQuNQXdTdJCSUv8

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.