Transaction not yet indexed

Q15GsTXojNER8qMYL1s5EFG3nzrWDpn8bjSVMU53tsr21NohP78nr7qLphpSLR1Az6jb8vNUsz3XZ6rXeJ7vnKY

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