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Using item revision configuration > Understanding revision effectivity

Using unit number effectivity

Unit effectivity allows you to specify a valid range of unit numbers for a particular item revision. Unit effectivity is always specified in the context of an end item to which the units apply. You can specify a discrete, noncontinuous range, if appropriate.

Source: https://docs.sw.siemens.com/documentation/external/PL20251212545240207/en-US/tc_help/pse/cme1737253379545/lwg1737253379641/c06a1001c.html · retrieved Sat Jul 11 2026 00:00:00 GMT+0000 (Coordinated Universal Time)