Good Afternoon - the lack of a N point in this scenario would not be cause to reject the plan or request an amendment
When a developer refers to a plan as having been 'LR approved' they are referring to the Estate Plan Approval (EPA) process -
Guidance for preparing plans for Land Registry applications - GOV.UK - see section 5 for guidance
The plan you have attached has been used as the basis of a number of plot sales, both completed and still pending, for this development