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Managing EBOMs-MBOMs > Run an alignment check

Perform an alignment check

If the EBOM is modified, broken links or other anomalies may occur. To identify and resolve such issues, run an alignment check to assess the alignment (logical equivalence) of occurrences in the EBOM and MBOM.

Procedure

  1. Open the two structures in separate structure views. Teamcenter considers all contexts for the lines in scope. The check compares specific properties of the logically equivalent occurrences that are under the designated scope.

  2. If packed lines are present, unpack the structures before performing the alignment check.

  3. Select a line in the source structure as scope for the alignment check.

  4. Choose Tools→Alignment Check .Teamcenter opens the Alignment Check dialog box with the source structure already selected.

  5. In the target structure, select the line you want as scope and click Add selected in the Alignment Check dialog box.

  6. Click OK.Teamcenter initiates the assessment and, when it is complete, displays the Structure Alignment Check dialog box showing the results. The upper table shows all pairs of occurrences, regardless of whether they match. Pairs with matched data are marked with a symbol, while pairs with mismatched data are marked with a symbol.The lower table shows all the properties of the currently selected pair of occurrences, allowing you to visually identify mismatched properties.Note The MEAlignedPropertiestoExcludeFromDetection preference defines the list of any BOM line properties that are not compared between aligned occurrences. In Easy Plan, MEAlignedPropertiesListToExcludeFromInitialization and MEAlignedPropertiesListToExcludeFromSync should not include the value bl_plmxml_abs_xform.

  7. (Optional) Click Save As Report in the dialog box.Teamcenter displays a Structure Alignment Check Report dialog box that allows you to choose a name or accept the default report name.

  8. (Optional) Synchronize the data of all occurrence pairs or selected occurrence pairs, as follows:

Choose each pair of occurrences whose data you want to synchronize by selecting the corresponding check boxes in the V column of the Alignment Check Results table in the Structure Alignment Check dialog window. To select all lines for synchronization, click .

Click Update. Teamcenter updates the properties of the target lines of all selected pairs. After the update completes, the Match status of the selected pairs is updated and the corresponding check boxes disabled. If any of the selected pairs cannot be synchronized, Teamcenter displays an error message.

Note

The MEAlignedPropertiestoExcludeFromSync preference defines the list of BOM line properties that are not copied to an aligned target occurrence when it is synchronized.

The results of the alignment check may be incorrect and an attempt to synchronize aligned occurrences may fail if the precision of aligned occurrences does not match, that is, one occurrence is precise and the other is imprecise.

Teamcenter assumes you use the same unit of measure (UOM) value for the same item throughout the system. The comparison does not check if the quantity differs between occurrences because different UOMs are used. In this case, the result may indicate a mismatch, but it would be incorrect to update the quantity without also updating the UOM value.

Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.mse/pmp03502 · retrieved 2026-07-11