Transaction not yet indexed

NN99ud7Sv2S5ciCex2z5mH2JCZ3xTJupcr8n2mkK3W18hAWgPMpJPAVVFDGhNoxDNNrn9jFeqTUTFkR3WMuepMM

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