Transaction not yet indexed

mffLUu18JCiBzoeudjRRHueZexx1CgtAdRmZKFDcGgQGNw3mbL5fUWvQA4Y1AgfL48Pu1H2ThYCkc6dNPe5jdEM

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