General

This service (consumer) is implemented to guarantee service request

Consumer logic

Validate message
1. in case of error - write message to log, move to error queue
Ensure that entity exists
1. in case of error - write message to log, move to error queue
Validate transition
1. Check service request status (must be 'active')
  1. in case of error - write message to log, set message as processed
Update service request status to completed (see Referrals State Model)