The ERiK-Methodological Report III is the third in as series of methodological report related to the 'Entwicklung von Rahmenbedingungen in der Kindertagesbetreuung - indikatorengestützte Qualitätsbeobachtung (ERiK)' study. The report focuses on the conception, sample selection, and survey designs of the ERiK-Surveys 2022. Together with the ERiK-Methodological Report I and II, it provides comprehensive background information on the ERiK-Surveys conducted in 2020 and 2022 up to the cutoff date of December 31, 2021. The subsequent steps taken in implementing the ERiK-Surveys 2022 will be described in a separate ERiK report, which is currently in progress and will be published at a later date.