Transaction not yet indexed

MFffkkPfqefb2uq3CfNbDb2YFzDMtYP1R6QLTwGVUxfxYp6CftjR7JTaw9K96bFifFpqS9XHZop3NBZ2A6Z3X8G

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