The ERiK-Methodological Report IV is the fourth in a series of methodological reports related to the 'Entwicklung von Rahmenbedingungen in der Kindertagesbetreuung - indikatorengestützte Qualitätsbeobachtung (ERiK)' study. The report introduces the implementation of the sample and survey designs and evaluates the data quality of the ERiK-Surveys 2022. Together with the ERiK-Methodological Report III, it contains all background information on the ERiK-Surveys 2022.