The basic unit of data sent from one Web services agent to another in the context of Web services.
						                            Source(s):
						                            
								                            
                                                                
                                                                    NIST SP 800-95
                                                                
                                                                                                                                                                                                    from
                                                                            Web Services Glossary - W3C Working Group Note 11 February 2004                                                                
									                            
						                            
						                            
						                        
					                            
						                              The data that is signed.
						                            Source(s):
						                            
								                            
                                                                
                                                                    NIST SP 800-102
                                                                
                                                                                                                                                                                                
									                            
						                            
						                            
						                        
					                            
						                              The data that is signed. Also known as “signed data” during the signature verification and validation process.
						                            Source(s):
						                            
								                            
                                                                
                                                                    NIST SP 800-89