Transaction not yet indexed

MumN4b45ynxVe4bZkkF13N47dfAS7VLsdWNuL68mDV6Q8piC3EV4nZZVHhNLJSw2GKsaQxSVx5hQooMQkKLDsLZ

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