Issues in relation to which referendums are mandatory at the national level
Uzbekistan
Answer
In the case of seceding autonomous republic - Karakalpakstan
Source
Constitution 1992
http://www.gov.uz/en/constitution/
Article 74. The Republic of Karakalpakstan shall have the right tosecede from the Republic of Uzbekistan on the basis of a nationwide referendumheld by the people of Karakalpakstan.
Comment
There is no national mandatoryreferendums. The only mandatory referendum applies when Republic ofKarakalpakstan decides to secede.
