...

1. The priority search is a search by tax_id. In case tax_id exists search will always be done with tax_id and birth_date. 
2. New flag "no_tax_id" is added. It signifies whether person declined the tax id according to Ukrainian law process. In case the flag is true the scan copy of special sign in person's passport should be added to declaration request. Logic is organized on Create declaration request 
3. In case flag "no_tax_id" is true, and document will be added to request, person search for a person will be done by document number.
4. Search for persons, with the age less than 14 years old, only by numbers in birth certificate and last_name, birth_date.

Business logic

link

Search person

Calculate patient age

...