Transaction not yet indexed

REXppfMcqaXXkkirCLH6oo1SmchPZ8NP64FneJm1zgnfHsYYFHmUG6Zoxcgt6SxWLB8vPQ8TD8QHSwyYvi6m7H5

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