Transaction not yet indexed

MkCopfqNRQzU6VXYDrTPDVDYxwSRk24Cs8g2JobYpoMHYbTBWSjWsJPaY7cqfFRCaTL2fqCFisqANJrSTNdEVMk

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