So I am 100% certain the exact same signed raw transaction went through on Blockchain.info's "
https://blockchain.info/pushtx" page, where you can actually send a raw transaction into the network. I literally copy and pasted the signed raw transaction string into both the page as well as a parameter to sendrawtransaction. In the latter's case (command line bitcoind on a Linux box), it failed with the error I mentioned.
On the blockchain.info page? It went through without issue.
These are not newly mined coins or anything like that. The transaction used a UXTO that was at least 200+ confirmations.
So ultimately, what is most boggling here is why would the exact same signed raw transaction string work on the blockchain.info page and not with my local sendrawtransaction?
Thanks.
Not enough information to help. You may have added or lost some characters from it, but thats my best guess.