About the Changed Property
If you edit a record, then Siebel adds a check mark (or Y) to the Changed property. This check mark indicates that you modified this object definition since a specific date and time. If the Changed property does not include a check mark (or includes N), then no modification has occurred since the specified date and time. If you modify a child object, then Siebel also adds a check mark (or Y) to the Changed property of all objects that are parents of this child in the hierarchy.
To configure the Changed property
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                    Click Settings (the photo icon) on the application-level toolbar and then click Settings again. 
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                    On the Settings form that appears, enter the date and time by which updated records need to be marked as changed in the following field: Mark as changed, all records that have been updated since: <MM/DD/YYYY/HrMinSec>. If a modification occurs on a record that the Object List Editor shows and if this modification occurs: - 
                            On or after the date you specify, then Y appears in the Changed property. 
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                            Before the date you specify, then N appears in the Changed property. 
 
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