(1) If the surety has provided suretyship on the instructions of the principal debtor, or if the surety entitled under the provisions on voluntary agency without specific authorisation, as a result of assuming the suretyship, to the rights of a voluntary agent against the principal debtor, then they may demand that the principal debtor releases them from the suretyship
1. if the financial situation of the principal debtor has deteriorated substantially,
2. if the pursuit of rights against the principal debtor is made considerably more difficult due to a change of residence, of commercial establishment or of place of abode occurring after the assumption of suretyship,
3. if the principal debtor is in default of discharging their obligation,
4. if the creditor has obtained an enforceable judgment for discharge against the surety.
(2) If the main obligation has not yet fallen due, then the principal debtor may provide security to the surety instead of releasing them.