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Microsoft® SharePoint® Designer 2010 Unleashed by Kathy Hughes

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External Lists Are Different

There are features found in standard SharePoint lists that are not available in External Lists. This is due to the uniqueness of data being consumed as well as storage location. ECT data consumed in SharePoint is not copied into the SharePoint content database; it is always read directly from the external system. For this reason the following list features are not available in External Lists:

Workflows: You are not able to initiate workflows either manually or on a change in an External List. You are able to use external data in workflows using InfoPath or External Data columns in a standard SharePoint list.

Version Control: Items in External Lists can’t be version-controlled in SharePoint. Version control has ...

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