Enterprise Administration > Implementing Windchill ESI > Implementing Windchill ESI in an SAP Environment > Business Processes and Organizational Considerations > Handling Effectivity in Windchill ESI
  
Handling Effectivity in Windchill ESI
For part-centric releases, there is no effectivity set on objects. For CN-centric releases, all materials will have effectivity equal to the day the transaction was published; all BOMs will have effectivity equal to the effectivity set in the CN task that had the BOM listed as a resulting item; and the CN’s effectivity in ERP will be equal to the earliest effectivity on the CN. If materials are created or changed, that will be equal to the day of the release.
Once you review these and make your decisions, you will be prepared to make informed choices when configuring Windchill ESI and be able to smoothly integrate the PLM services offered by Windchill PDMLink with the services offered by your ERP distribution targets.
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Besides date effectivity (which is what is being referred to in the last two paragraphs), there is added support for publication of serial/lot effectivity. Thus, when making decisions around effectivity, consideration should be given for serial/lot effectivity as well as date effectivity. For more information on how serial/lot effectivity is being supported, see the relevant sections in the online help, and in the Windchill Enterprise Systems Integration Customizer's Guide - Oracle Applications.