Product attributes
Product attributes add business-specific fields to each product. They can also be used by custom pool pricing setups. See Working with Base Product Attributes for field types, examples, and setup steps.
You can add attributes at any time. Neptune will not save a renamed or removed attribute while a product or pricing setup still uses it. Update those products or pricing setups first, then return to Admin > Workflow, open the attributes tab for your product type (for example, Pool attributes), and make the change.