Data maintenance service refers to the managing of paper work relating to third company. The data provided by the company are large in volumes in the form of documents or images.

Data Maintenance services include data entry, data conversion services, imaging services, data processing services and catalog conversion services. Each company whether small or flourishing needs to maintain data. Only difference here is some may need it on a daily basis like telephone companies and some may need it occasionally like petrol companies. Whatsoever may be the case accuracy is required, even a small error can be harmful to the company. But due to the heavy workload and the lack of proper infrastructure this work is outsourced to a third company which guarantees 99.9% accuracy with timely delivery of the work. It again is a cost effective method as the original company does not have to invest extra in terms of employees and infrastructure.

Data maintenance services include web and conversion word processing or typesetting document formats to other formats. The format may vary according to the clients requirements as follows:

- Scanned paper reports/images to Electronic Format
- Image to xhtml and tiff to pdf
- Paper Documents/scanned images to MS Word
- Books to HTML, XML, XHTML, searchable pdf and MS Word
- Book Conversion
- XML Conversion
- Image cropping, enhancement using Photoshop and CS photoshop
- Vectorization
- Scanning and conversion of paper documents

For Data Maintenance Services the outsourcing company needs to consider a few factors like indexing criteria for retrieval purposes, capability of the vendor to offer complete solutions for life cycle management of a document, integration of converted documents into main stream EDMS and shipping logistics for documents. For taking data entry project the company should have trained staff and management team, all the hardware and software equipments, knowledge of operating scanners and OCR equipment, document management software skills and a workforce at competitive wages.