Transaction not yet indexed

MkSK6J3gEvQEuk7fTZGbbEdmVrf9M4aNxD7szZG5CpbaWgt4cD4uGpg4bpq8CxLpq7BecRY1to4DLfookE21bdj

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