Transaction not yet indexed

MugSxPgpAcK728RE4qMMsxzDXZPiADz77F3tL3NK3wT7GLUPNsHotC6PbikxwVQjqWGfzZvLXs4EgRs3PvrkWC8

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