Transaction not yet indexed

21UPCZmGHsv71hLRcu7Jb3d8UeXiBiSFuSqR319sdYNU66rHuR2L6TsYboX7ycVoAShHqm7oCqqMWFce5pZM3Qa5

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