Transaction not yet indexed

ffMamu7QD4Me3nDX24YJubLD8ULmqqq2kdzabEaALVuptaKMQ4BfzLDxSP53pE3YG4spyp1BdvrMc5GUstxZeRE

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