Transaction not yet indexed

mMC6tQL5u6WgLEJwbd3TQAvez7chj3TymZF9RTRdFzY6MXPwnYHe8ziPkUwdLrxLoGJZmsvHBRGU92GqSWXrbBF

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