 documents, a different distribution of 
subjects between documents, different document names, etc. 
Preservation Policy: Written statement, authorized by the repository management, that 
describes the approach to be taken by the repository for the preservation of objects 
AUDIT AND CERTIFICATION OF TRUSTWORTHY DIGITAL REPOSITORIES 
CCSDS 652.0-M-1 
Page 1-5 
September 2011 
accessioned into the repository. The Preservation Policy is consistent with the Preservation 
Strategic Plan. 
Preservation Strategic 