Transaction not yet indexed

5aC18ZaZzkNzbDJqWACEkqDDBcscFQb8CS2VDYu2A5XfY1pjimtqAgYXnLC7QXArNQnZRt6bNe9DXtjHWn3WRvv3

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