Transaction not yet indexed

21Mcv5ArazysNpY6D6sBbfKVbCYSwnHA1dNnkJiRLjMUUPUfmknx4y8KXvwGSH7PFXtC9LRFVq3QAZv2VJ7Toix4

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