To increase consistency and comparability in fair value measurements and related disclosures, IFRS 13 established a fair value hierarchy that categorizes into three levels the inputs to valuation techniques used to measure their value.

Level 1 inputs: Quoted prices (unadjusted) in active markets for identical assets and liabilities that the Group can access at the measurement date.

Level 2 inputs: Inputs other than quoted prices included within level 1 that are observable for the asset or liability, either directly or indirectly.

Level 3 inputs: Unobservable inputs for the asset or liability.

There have been no transfers between the levels in 2020 and 2021.

The following table shows the valuation techniques used in the determination of fair values for assets and liabilities measured at fair value on a recurring basis after initial recognition:

The carrying amount of financial instruments measured at amortized costs (see note 28.2) is a reasonable approximation of their fair value due to their short-term nature. Bank loans and the bond are the only exception due to their long-term nature. Their fair values are disclosed in the following table.