IL.Get Employee Request by ID

This method searches and returns request to registration employees by id. This method uses scopes and context. 

According to requirements: 

• Legal entity(Owner, HR) can see only employee_requests that were made by this legal entity.
• NHS Admin can see all employee_requests

Specification

• id  

Validate request

1. Verify the validity of access token
   1. in case error return 401
2. Check user scopes in order to perform this action (scope = 'employee_request:read')
   1. in case error return 403

Validate id

1. Verify id - employee_request_id exists
   1. in case error return 404 (not found employee request in DB with this ID)

Validate context

1. Get legal_entity.id from '$.context'. Filter employee requests by legal_entity.id
   1. in case error return 404