I&#039m developing an n-tier application with ASP and COM. the front end consists of a web browser where the user inputs the data to be retrieved. the input is passed to the mid-tier which creates a COMTi component and passes the data to it. the COMTI component passes the data to a mainframe host via SNA. the problem here is data is being passed to the host and the transaction is being invoked on the host and the data is promptly returned by the mainframe, but the data is not reaching the mid-tier and the error no that i get is 1508. it says that either the server program has an error or the COMTI component is not the correct one. i checked the COMTI component and it is perfect. the host developer says that his program is returning the data in the correct format. I&#039m without a clue.<BR>-A frustrated programmer