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Comparing product structures > Comparing structures under change management

Select comparison information

Select information about the change-managed objects you compared by clicking the Revisions and Graphical Compare tabs of the Change History dialog box. The Change History tab includes the following two panes: Revision list pane The Revision List pane displays the item revisions belonging to the selected item. The item revision nodes are color-coded to convey the change revision information of each revision. If a revision has an associated change, it is displayed in pink, otherwise it is displayed in black. Progression pane The Progression pane displays all the revisions of the parent structure in a vertical multibranched tree. The tree displays one of the two following relationships between child and parent objects, depending on the CM_progression_tree relation preference setting. Preference value Types of relationship displayed in the progression tree EC_affected_to_problem_relation In the impacted/solution relationship, the selected revision is the solution revision. The impacted revision is shown as a parent revision. This relationship is only displayed in the progression tree if the selected revision is part of a change process. This is the default setting of the preference. TC_based_on In the based on relationship, the revision upon which the selected revision was based is shown as the parent revision.

Note This relationship does not depend on the selected revision being included in a change process. The Graphical Compare dialog box includes the following controls and boxes: Component Description Progression and Revision buttons Choose the required mode of the revision list. By default, the revision list includes all revisions in a color-coded format. If a revision has change associated, it is displayed in pink; otherwise, it is black. If you click the Progression button, revisions are displayed sequentially. Compare With combination box Selects the revision with which you want to compare the selected revision in the left side tree. By default, the problem revision is selected if a change object created the selected revision. Otherwise (for users not using Change Management), the Based On revision is automatically selected. View Type combination box Chooses a particular BOM view type in case the selected revision has multiple BOM view revisions associated. Your default BOM view type is selected automatically. If you are not using multiple BOM view types, the correct type is automatically shown. Set Revision Rule button Chooses the revision rule to configure the selected change revision. Change button Opens the associated change revision in Change Manager. Effectivity Data table Displays the effectivity data attached to the selected revision. If no effectivity is attached, the table is blank. If the revision is effective for multiple end items, all end item effectivity entries are displayed. Paste button If you want to compare the selected revision with a revision of another item, you can copy the revision from another application and paste it into the Compare With box. Status pane The status pane at the bottom of the dialog box gives status information (for example, loading parts).

Source: https://docs.sw.siemens.com/documentation/external/PL20251212545240207/en-US/tc_help/pse/xzq1737253370295/lvc1737253373788/comp_revisions_tab.html · retrieved Sat Jul 11 2026 00:00:00 GMT+0000 (Coordinated Universal Time)