Transaction not yet indexed

21Srbm2qRr9WHsFmnSYcw9uktStbqc1UHbbaxe1RXYGx3vWv5AncmxaHfRE6AWHqmuZiLQSF4iZu9kLjzNXZXfa9

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