Transaction not yet indexed

AmpbVgdPXDHWFGofJMEafVBvJMoyGmKFHBzxPG4bdLynZoLJtj1Dut6a7QhzxqfMd2kH2iutATCDB6MVp67pWs8

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