Transaction not yet indexed

MpKzWZ4xAPnR2HB2U4RtnNgefoxa3knsTaq2GkupvhUbYKAyfbpw2njBM6Hu9Nt23SUquTq8AzMCXb9PiA9o1ip

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