Transaction not yet indexed

MD12KthKAqeTF1tm6VU5r5y9eMS6n6pnFKRidfk9JsfnYGr1jPUB6ymqRmjnkCEShkYGD3RHv7WDnTTotNxyq1q

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