In our device the data type ByteString is mapped to a type of the application named octet. In our application an array of octet maps to an array of ByteString on OPC UA. But an array of octet can only have a single element per array index. The application definition is not possible to change.

When running CTT we have experienced problem with this as CTT tries to write an array of bytestrings where each bytestring has a length >1. An example is "Monitored Item Services - Monitor Value Change - 029" which writes 14 elements per array index.

Is it valid to have a such narrow limitation as max 1 element in a ByteString or is the CTT expectation that a ByteString should handle 14 elements invalid?