Transaction not yet indexed

518SSMRnbb78bji7TB2V1iUWTDP1PdcTzEmhNttQuarXaAPxoGbUtB6tTQAMRF1MQnWrJR1qFFnXwkZRRHDB9PxU

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