Transaction not yet indexed

Mdk2fphTbAobtDKoizXTGPrDPWMkNRKQamhR17xDbuoVLtxJ8k3gFEeS3NoL1ttaYc7e35fvzp9gQYLdcAVupYm

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