This document presents a manuscript proposal examining the roles of family planning services in women's contraceptive choice in Indonesia. The study aims to assess the level of mismatch between intended and actual contraceptive use and examine how the source and type of family planning services influence any mismatch. If approved, the study would analyze existing survey data using descriptive statistics, bivariate correlations and logistic regression to model the relationship between services and contraceptive mismatch, controlling for demographic factors. Key topics to be further developed include limitations, results, discussion, conclusions and recommendations.