Transaction not yet indexed

mMU4bQD19BtQcJvUNrXFpCCJffq7KrJujHNTUMYUDfeXCenYfXmA1V7FwZxs5aNqAC6MgsxLn6atCXQ5R2HLbf7

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