Transaction not yet indexed

mkRUb455mZsGVLv4fPkWbxX8Bx2r7UVh4NfPmbuhEAMQqkWQ4CmwbZ11DoZPfFSxfaytFhcM8yDGSgqw6FEgGqh

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