//SetUnderlyingSecurityIDSource sets UnderlyingSecurityIDSource, Tag 305
func (m OrderMassCancelRequest) SetUnderlyingSecurityIDSource(v string) {
	m.Set(field.NewUnderlyingSecurityIDSource(v))
}
//SetUnderlyingSecurityIDSource sets UnderlyingSecurityIDSource, Tag 305
func (m DerivativeSecurityListRequest) SetUnderlyingSecurityIDSource(v string) {
	m.Set(field.NewUnderlyingSecurityIDSource(v))
}