The document discusses the importance of data quality for customer relationship management systems and identifies common sources of data errors such as input mistakes, external inconsistencies, and data migration issues. It recommends that businesses use a four point program from Data Check Central to assess customer data quality, cleanse and improve inaccurate data, model the data, and integrate it to eliminate errors and ensure data standards are followed. This will help businesses maximize productivity, increase customer satisfaction, and improve marketing return on investment through targeted communications.