Transaction not yet indexed

521iv42RfdvgRfcv6pZ9iHjVqTbmeonh46LMwp4kETPjF5XZqnwRY4EhH16CSE4pfUWbv2z96tEgZJppTabvr4Pj

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