From newsgroup posts:
- The error comes from IDispatch when it cannot map the name to a dispid.
- Experienced this error when using the MS Site Server commerce edition "Site Builder Wizzard". The solution was to use the MS Oracle driver (supplied with MDAC 2.5 or later).
- You get this error if do not put the Interface ID when you are creating the subscriptions using the "InterfaceID" ValueName.
Symbolic name: DISP_E_UNKNOWNNAME
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