Firstly, you need to review the procedural issues. For example:

• Are the documents correct?
• Have they been served in time?
• Are there are any errors or discrepancies that can be used to dismiss the case?

Even if it is apparent that some errors have been made, do not proceed on the basis that the case will be instantly dismissed. The rules do allow for amendments to be made so be prepared to show that any such amendments would be fatal to the prosecution and highly prejudicial to the case proceeding.