I am getting an exception:

Exception information: 
Exception type: FaultException 
Exception message: System.ArgumentOutOfRangeException

while calling my FS4SP web service. It runs fine for small queries but fails when my search criteria becomes large (2000+ characters). Does FS4SP has a limitation on search criteria? My QueryText in in STRING format.

1 Answer 1


As you have seen, the limit for the Query is actually 2048 characters. So any more than that will throw this exception.

https://stackoverflow.com/questions/8061330/how-to-overcome-fast-search-char-limitation-2048 is a possible duplicate of your question, but sadly it never recieved any attention.

Also this from Technet http://social.technet.microsoft.com/Forums/en-US/fastsharepoint/thread/b193fc10-3c39-43d3-9e4a-378ff90125f2 with some answers and approaches


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