Transaction not yet indexed

Mp88f43LzPgunCwsSQLj3p7FP4GkLfkK6yJA5MzTjL1oZfiiNDzPRLdzLDhSY3z4t4BS2cx1k4g6mS7KQsY2fWC

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