#19 Synchronous reading error

[Broer]

Hi,
I'm working with an VESTAS OPC server. I've created a bridge with JEasy OPC in a OSGI environment. The bridge supplies an REST webservice for clients. To retrieve the data, a new group will be registered with all items, I use synchReadGroup. In most cases, this works alright. But in case some items are not available (in this case VESTAS is a supplier of windmills, and sometimes data for a specific wind turbine is not avaialble because of maintenance). A normal MATRIKON OPC client just ignores thes items, but JEuasy OPC (delphi) generates sometimes a Synchronous reading error.
Is there a way to understand what is going wrong (also the VESTAS OPC server [VOBServer) eems to misbehave. Please help