Create is the process of creating or keep adding data to existing data sets. This can be files that are added, or data that is added to a database, spreadsheet or similar. Data can be created by tools, sensors, manual entry of data etc.
Be aware that this process is strictly for actions where you add to an existing data set. If you alter/edit existing data by e.g. updating a value, the create process should only be the right choice when you make sure that you save the old value.
When you create data, you should be aware of the kind of metadata that is made along with your data. This can be data that is automatically saved with the data, like embedded metadata for pictures, or metadata that you need to create manually in order to e.g. keep track of your data.