Transaction not yet indexed

215m388eU6RYLV4v6CMDiDMVB2rU21d3KeqcWXdnyWgDBRXLfeK5MBqUcv5gbGpUfYNpPrnp5Eu66UcqWj3YMXa2

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