Permenkes No. 269 of 2008 states that medical records are files that contain records and documents about patient identity, examination, treatment, actions and other services that have been given to patients. Based on preliminary studies at the UPTD RSUD Salatiga, the process of storing triage sheets and assessment of ED patients for non-hospitalized patients, both new and old patients is not stored in the patient's medical record folder. The purpose of this study is to find out the causal factors for not storing triage sheets and assessment of ED patients in medical records in terms of aspects of Man, Money, Method, Material, Machine.This type of research is a case study. The method of data collection is done by the method of observation and interview. Data were analyzed using descriptive analysis and presented in narrative form.The results of the study were obtained from the number of triage sheets and assessment of ED patients for patients not hospitalized 100% not stored in the medical record folder. The causal factors include human aspects, namely education of officers, training, workload, number of employees, money, money, budget, roll, o'pack, moderate, non-existent, cost of repairing storage space, aspect of method that officers do not work according to SPO, Material is outpatient medical record folder size smaller than triage sheet size and assessment of ED patients. The machine is not yet using a storage aid. It is recommended that the storage system for triage sheets and assessment of ED patients is in accordance with Permenkes No. 269 of 2008 concerning medical records and the Ministry of Health of the Republic of Indonesia in 2006 regarding the storage system of medical records.