Form Extension: An item with the same key has already been added

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Posted on by Sarah Ryan

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Hi there

When I try to open the "HcmWorker.ExtensionPayroll" form extension in the designer of Visual Studio, I am getting the following error:

1643.ItemWithSameKeyAlreadyAdded.PNG

Then when I click "OK", I then get this error:

4466.MarshallingWindowFrame.PNG

This is a standard form extension that I am trying to open.

Note that this is an upgrade from 2012 and I have conflicts to resolve on the HcmWorker form. I tried removing all the customisations from the HcmWorker form, but I am still getting the error.

Any assistance is appreciated.

Sarah

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Sarah Ryan 257 on at

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Hi there

I discovered what the issue was. There is a table within the datasources of the form (JmgEmployee) that I was in the middle of upgrading. I had copied all the elements to an extension of JmgEmployee, but forgot to delete the customisations from the standard table...doh!

Hope this helps anyone else who comes across this issue during an upgrade :)

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