Transaction not yet indexed

642UWNdeWQVfCsWsZ3Mxa9mvavZkanH3Bb8NeeTC5xQKw4bTGPmVppspQqQp3cuo33YN1qRHsUBsy8SEnFZjDPG9

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