Transaction not yet indexed

21MCb4oXccbCxnTySDvb1t4pzqGwJSqTHgzvujqoTZgVSV1rn8EfVRUUSJMSuFTNo48M5ecfLeKWqPFCbWTKi4Gh

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