Transaction not yet indexed

4AmbFz8NYVMDcsS39e8Jdt46i7XKHxWFajQAvNJ2G9JhbM3PxSGXkmNispvUWB1mM5AQG36j26h5FnfbGz1JWL19

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