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Extract user_id and legal_entity_id from token and find corresponding employee_id
Check employee status is APPROVED
In case of error - return 422 error (Only active employee can create merge request)
If employee has division - validate it has status ACTIVE
In case of error - return 422 error (Only employee of active divisions can create merge request)
Validate authorize_with
If submitted, validate authorize_with field for a person as described on create Person request process
Save object to DB
il.merge_requeststable
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