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External Content Type - Read List Operation - "Cannot find a collection element of a supported type.

Posted By:      Posted Date: September 24, 2010    Points: 0   Category :SharePoint
 

I'm trying to define External Content Type Operations for an External Content Type. I can add a Connection, Type "WCF Service" no problem. And I can define a "New Read Item Operation" using that connection.

But I can't define a "Read List Operation". I get the following error message, in the Return Parameter Configuration: "Cannot find a collection element of a supported type..." it goes on to say - see the help documentation for supported types. I can't find any help documentation on this.

I've tried returning different types in the provider web service but keep getting the same error. What are the supported types the web service can return?

The reading I've done suggests that you can connect to a non-MS web service using a connection type of "WCF Service". Is this correct? If it is what's the best soap format the web service provider should use - Doc/Literal?

Thanks,

Glen




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