Error profiles for the Fall Enrollment Survey of the Higher Education General Information Survey (HEGIS) were developed as part of an assessment of the quality of survey data. Three statistics were of particular interest: the count of full-time equivalent students, the breakdown by race/ethnicity, and the count of unclassified students. Attention is focused on the sources of error in these three variables. To provide documentation on the sources and extent of sampling and nonsampling error, each of six stages of the survey were reviewed. The processes for the stage are described, along with possible errors arising from the process. The following stages were examined: survey objectives, sampling, measurement instruments, data collection, data preparation, data analysis and interpretation. Appendices provide background information on HEGIS, a list of nationally recognized accrediting agencies and associations, suggestions for improving the wording and format of the Fall Enrollment Survey, an example of a revised HEGIS survey form (Institutional Information for the Fall Enrollment and Compliance Report). (SW)