Transaction not yet indexed

5991jkzpcNKSu6mLNmpP3sMD5WUTHFSeZAc1oR7ToqQjzSgYbq7DWzPLmdVk6DtPThZ8omrmT2QepuuMSyFcp1B2

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