why I got 'ID is required' in returned message?

Does anybody know why I got ‘ID is required’ in returned message?

I traced down to an RPC call in the Runtime.dll and cannot go further. It should not be a security problem because my code works for a number of testing data but fails for the rest data.

Any idea??

This is hard to guess …

Could you please describe your environment, which component and version of EntireX you are using ? Does this message come with an error number ?