Transaction not yet indexed

21b51pEdftsANtXbrak3PuHXZfWBFYpvmfTMSoq6LsiXwRNNdATJdrkmcxT7vvTEJ8pVCWmgkd71p8jFV9CTYCPn

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