Question2Replies12Views TakeshiI5816 Member since 2019 68 posts Ito Posted: October 7, 2019Last activity: October 7, 2019 Closed sample populationAs I'm on creating a sample population following the instructions in the "Pega Marketing User Guide 8.2",I cannot run and error message appeared which is attached to this article.As a premise, I don't have customer data. Following is questions I want to solve.1)Why this error message appear?? This error is caused by not having customer data?? Pega Marketing ×Close popoverFacebookTwitterLinkedinEmail Copy Link Copied! Moderation Team has archived post This thread is closed to future replies. Content and links will no longer be updated. If you have the same/similar Question, please write a new Question. Posted: 1 year agoTakeshiI5816 Ito replied to TakeshiI5816Please help me!! Posted: 1 year agoPrakhar_GCS PEGA replied to TakeshiI5816Hi, If we see pega marketing installation guide "https://community.pega.com/knowledgebase/documents/pega-marketing-82-installation-guide" In the prerequisite it says Customer Data schema should be created. Try to create Customer Data schema and see of that resolves your issue.