Transaction not yet indexed

MydS4ff7MTv6X3QLNDmfDwZipVcuVixt4E2eWjqjwLGTjPdPDcKXFcQq9nv3TFzscCFVcXZneUDxFRPenhLVzD2

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