Content of a record of processing activities
In the records of processing activities you should list the processing activities that you carry out within your company and provide, at least, the information set out by the GDPR.
Regarding how much information it should cover, minimum and concise information should be sufficient, resting in your capacity the decision of going more or less into detail. What is important here is filling in all the required fields and doing so with accurate information.
Ideally, you should make a good description of each processing activity, as this will help you out on a later stage to analyse risks and, where required, carry out data protection impact assessments.
Moving on to what information must be included on the records, it depends on whether you are a controller or a processor.