Which exception is to be excepted if a client issues too many service calls to a server|OPC UA Standard|Forum|OPC Foundation

Hello,

we are in the process of revising our client, and when it issues a read service call we will cut it into packages to not exceed the max number of nodes per read service call. 

From the short texts in the spec it is my understanding that the server might raise a BadTooManyOperations if we would not do that. 

("The request could not be processed because it specified too many operations. ") -- this exception is referring to a single request. 

I wonder, though, which error code I had to expect if I now create to many read service calls (so there would be, potentially, too many requests). There does not seem to be a match in the service results for that situation. Is this not an error I have to expect? (I had a look at tables 172 and 173 in part 4, ver. 1.04, to check)

Tia and best regards,

Thomas