Transaction not yet indexed

528TFNUuCpcS3HifngE7DoPCU3vAEC3AsHFjiGkdfYuCisEfDtwRGYpUQNJNEaGKMfMnp4TJqDZwRFDiCyPrxNrM

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