Managing EBOMs-MBOMs

Occurrence effectivity options from EBOM to MBOM

Using the MEAlignedPropertiesList and MEEffectivityAssignmentMode preferences, your administrator can configure a linked EBOM and MBOM so that the unit-based occurrence effectivity of the EBOM (source) is automatically established in the MBOM (target) after a line or assembly has been assigned to the target. This option helps you avoid errors resulting from manually entering the occurrence effectivities yourself.

Depending on your administrator's settings, when you assign a line in an EBOM to an MBOM, the assigned line may:

Inherit only the occurrence effectivity defined on the EBOM line, if such effectivity exists. This is the default behavior. Example Assigning EBOM line 000155/A;1-c7 to the linked MBOM inherits its effectivity from that line, not from any line with a different effectivity higher in the structure.
Inherit the effectivity of its parent if it has no effectivity of its own. Example Assigning EBOM line 000156/A;1-c8 to a linked MBOM results in the assigned line inheriting its effectivity from its parent line because it has no effectivity. If you assign EBOM line 000156/A;1-c7 to the MBOM, it retains its own effectivity of 11-25.
Display a calculated net effectivity value. Net effectivity calculates the intersection of effectivities set on the path from the EBOM line to be assigned up the parent chain. Starting from the selected EBOM line, and including the EBOM line itself, net effectivity traverses up the parent chain until it finds the first parent with an explicitly defined occurrence effectivity. The occurrence effectivity defined on that parent becomes the MBOM line’s net effectivity. If an effectivity is defined in the BOM window’s revision rule, the computation will intersect the parent’s occurrence effectivity with that defined in the revision rule. The result of the intersection is the final net effectivity. Example The top line of the EBOM shown is associated with a multi-unit configured effectivity group with values of 1-10 (not visible). Line 000156/A;1-c8 has no effectivity, but its parent, 000154/A;1-Deform has a value of 1-20. Net effectivity calculates the available range shared by the multi-unit configured effectivity group value (1-10) and the 000154/A;1-Deform value (1-20), which is 1-10.