Transaction not yet indexed

MTf6Pk9ZoFLPSfRdVEM3krX9CZz5XUSGrvdM6NXA4JjEXWWGEfj3KzVWXJsBMwymDtz6g1ceVsExsWSkGJZ3eCm

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