Negligence / failure to provide sufficient advice to enable complainant to make informed decision / failure to keep record of oral advice or confirm advice in writing / complainant a nurse who obtained New Zealand Diploma in Management (Healthcare) / complainant offered work as a caregiver & wished to apply for post-study visa / adviser advised relevance of qualification to role an issue but advice not recorded or communicated in writing / application declined because INZ not satisfied employment relevant to New Zealand qualification / complaint that adviser did not advise a backup plan should application fail / Code of Conduct 2014, cl1, cl2, cl26 / standard of work required by Code not excellence, but reasonableness / proper immigration advice given as no evidence to contrary / issue of whether qualification relevant to role critical & advice on issue should have been confirmed in writing / complaint upheld.