Import dataset items from CSV

Import coefficient values from a CSV file into a dataset. Requires owner permissions.

CSV format required:

• Label (required): Human-readable name
• Key (required): Unique identifier
• Value (required): Coefficient number
• Unit (required): Measurement unit
• Extra columns: Become metadata fields

Import modes:

• upsert: Add new coefficients or update existing ones (recommended)
• replace: Delete all existing data and import fresh
• append: Only add new coefficients, skip existing keys

File requirements:

• Keys must be unique within the dataset
• Values must be valid numbers
• All required columns must be present
• File size limits apply

Common uses:

• Load initial coefficient data from external sources
• Update datasets with new regulatory values
• Migrate data from other environmental systems
• Bulk update multiple coefficients at once