Transaction not yet indexed

mttKFYSPPywSwzRVGXtnqHWQjYBXKaSomsYzH5mnRD7RfkFZeFe8vucEWhdRHNrrDWSvL2kHRT1WkY1MmEraTP9

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