Selecting Key for Entity Services in CAF

Hello All,
I have a question. While creating attributes for an entity service, we have an option to select it as key or complex. Suppose if we choose many attributes as key , then will it be a composite key ?
Like if we created Entity "project", and then create following attributes
Dept (Key)
ProjectName (Key)
Description
Then will Dept and ProjectName together form a composite key ? or they will be individual keys for the project?
Thanks
Ashutosh Rastogi

Hi Ashutosh,
I think they would form a composite key.
In fact the other day we were developing a PurchaseOrder entity service and by mistake chose poNo and vendorNo both as keys. Now we had a findByVendorNo operation which was returning a list of POs and we had only mapped the po from the BAPI to the attribute. Everything was hunky-dory during design time, we were able to build and deploy but while testing it using the service browser, on "execute query" CAF returned us an error. This was even though poNo was unique for every record.
Regards,
Parag.

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Message was edited by:
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