Transaction not yet indexed

21em51tqVi4J4zQChQHeNdCmTon5PWvXK2b8uSt3du5yTQMdbSdmoEurf7kf8zkprbyXkVRkD2aRg6d9qjDSdAM6

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