I have a WCF(REST) Service in the view mark up i added factory attribute like this:

...

i have another question,
if we get the above error how can we convert list(of Transaction) type in one dll to list(of Transaction) type in another dll.

thanks plater,
ya i am using different dlls

Value of type 'System.Collect ions.Generic.Li st(Of StreetSavings.B usinessLayer.Pr oviders.Transac tion)'
cannot be converted to 'System.Collect ions.Generic.Li st(Of StreetSavings.B usinessLayer.Pr oviders.Transac tion)'
. Type mismatch could be due to the mixing of a file reference with a project reference to assembly
'StreetSavings' . Try replacing the file reference to 'StreetSavings. dll' in project 'SSavings3_0'
with a project...