Transaction not yet indexed

MCUB6kFmufEQ5BatfSMQJfx8uF1b6pXJsLChLtPwt4iw37JS648Q1PUouAtB1gN8fcpwM5zzWwbZfcnwyRCxDh7

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