what is your assessed qualification? is it a bachelor degree? A Qualification at Level 7 is something means compare to NZQF your qualification is level 7, it may be a bachelor degree or some diploma can also equal to level 7.
If the ANZSCO requires a bachelor or higher, I believe you may need a bachelor degree for applying SMC. It means in case if your qualification is not a bachelor degree, even if it is level 7 but you may still not eligible to claim SMC points. If you are in this case, you better consult a Licensed Immigration Agent to ensure that before submit application.