Transaction not yet indexed

mdMybMCa5iowPoJssnWx2SXiX4RWZrCAcM2vnSqVqQMsuhN5ScM8MmAewpVusRq8BRC4Q6ExNmG99qsaL6JqrPy

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