UpsertContactInput

"""Input for creating or updating a contact"""
input UpsertContactInput {
  """ID for update; omit for create"""
  id: ContactID
  """Associated customer ID (required)"""
  customerId: CustomerID!
  """External system identifier"""
  externalId: String
  """Contact's first name (required)"""
  firstName: String!
  """Contact's last name (required)"""
  lastName: String!
  """Email address"""
  email: String
  """Phone number"""
  phone: String
  """Job title or position"""
  jobTitle: String
  """Whether this is the primary contact"""
  isPrimary: Boolean
  """
  Override creation timestamp (ISO8601). Honored only on create — passing on update is rejected.
  """
  createdAt: ISO8601
  """
  Override update timestamp (ISO8601). Honored on create or update; defaults to now.
  """
  updatedAt: ISO8601
}