Transaction not yet indexed

UMkuU5DV8QgCRq9ZTaooDRe72iFAQCG4aNntKykMQfPMNywfDVMpp6BSyo23HqdpdBiFajNGGS6oEGHjxVN9DVq

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