Transaction not yet indexed

MRb5CYg9frtZU7gXap8stNu5Spcyu1SS4pQss2sprp5kWGwLLcmcKkumE2xNqdDoFm2fK19WaTrN2aXW4yc4MFZ

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