If you are a Presbyterian minister serving in a parish or chaplaincy you are required by the General Assembly to hold a Certificate of Good Standing, which remains valid for a period of 3 years. It is renewable by undertaking a Ministry Development Review before the 3 year term expires.
It is important to note that this is a Development review to assist you in improving and developing your ministry. It is not marking you against a pre-determined scale, nor comparing you with anyone else. The report is private to you and shared only with whom you choose. It is normal practise to share the report, and in particular any development goals, with you pastoral supervisor in order to monitor progress over the next three years.