Create and manage custom fields for customer records.
Use this collection to define and manage custom data fields attached to customer profiles. Custom fields let your integration store scheme-specific information alongside the customer record.
All requests require the X-ApiKey and X-Scheme headers.
Available operations
List all configured fields, retrieve a field by ID, retrieve a customer's value by field key, and create or update field definitions.
Use custom fields when a value is not part of the standard customer model, such as an external membership reference or integration-specific preference. Consult the endpoint reference for the required field definition and customer identifiers.