Transaction not yet indexed

MtEPXpp4qSccgci8TmntkdFfJVYAEeCiWFjVbNr8pqBiHoQpF1WjjNwHgCnxjQgDJDrJXjQcV8C7EAAuxYcPPvv

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