Importing Your Own Property Code
If you have a unique code for your property that you want to import into Pebble, you can bring in your unique property codes into the Property's property fields.
Here's how to import your own property codes.
Add a custom property field and name it. Some examples are Property Code, Property ID, etc.
Here's an article explaining how to Add a Custom Property Field
Once your custom property field has been created, you can then upload your list when creating a campaign.
You can then map the unique property code column header from your list's spreadsheet to the custom property field you have created for your code: