Here is the code I changes - it is not very elegant but I am not a Ruby guy. Mostly C++ and Python. private def encode_params(params) return "" if params.nil? if params.is_a?(Hash) then params.sort.map do |k,v| URI::encode(k.to_s, @@encode_reg...

I have modified my local copy and here is what I get now - on the second request - invalid signature. I have modified the logging so you can see the exact URI along with what is created as the “canon” Here are the logs from the request. Now to be fa...

Yes - this is what we are using in our solution.

I wish we were using the Python library - unfortunately I’m locked into using the Ruby client. From what I see the Ruby client does not handle duplicate parameters since it expects the params to be a hash object.

Thanks for the info - the documentation for this request has “allow multiple” set to No. I would suggest reviewing this documentation for accuracy and adding a sample request.