Does BPMRESTRequest have method to set query parameters for GET.
We are able to invoke POST and PUT by setting parameters to request.parameters. 
However, GET throws 400 if we set the query parameters to request.parameters.

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Manish Poddar
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It works in the same way for GET as for POST. Just ensure that
your parameters are aligned with path (if you have also path parameters) :

request.httpMethod = "GET";
request.path = "/yourApi/goesHere/{pathParameter}";
request.parameters = { "pathParameter":   "Value1",
                                      "queryParameter": "Value2" }

will call URL:  /yourApi/goesHere/Value1?queryParameter=Value2

HTTP 400 means that you sent wrong parameters.
Your service provider may give you more details – check in response content

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Sebastian Tylko
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