Transaction not yet indexed

i21c577cX9zBSNqGZEfuvpRsBSa3UUpsyZjWCqpX3PjCN8JBvzgcbBXS7Jkg2iKd3GSPMQSRigMxW3JaV1xfUs3

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