Transaction not yet indexed

21S4ckqvWzEtzfxK9WRGPafgySuSCjaaed1UeNB3jo2yUebGBjXaqSQewuMQEhEHrvd6zwVUTc5PfWFdFCewVoE5

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