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Custom connectors and HTTP GET with multiple, repeated Query Parameters

I’m adding some REST calls to an existing custom connector.  The specific HTTP GET call I want to make is as follows:




Note the repeating attr values, above (there are two).


And here's the Action I've added in Flow:




As indicated by the red highlight in this screenshot, Flow seemed to pick up only one of my attr parameters.  Whereas, the URL (above) has multiples.


I’ve scoured Google and the Flow Community pages, but I’m not able to find a solution.


Anyone have any experience with how to make a Flow Custom connector accept multiple, repeated Query parameters?


Community Champion
Community Champion



There's no defined standard to parse multiple Query Parameters with the same name.


This stackoverflow discusses this in detail.


Basically this depends on the implementation of each platform and Flow may ignore the next occurrence with the same name.


Ideally, you should avoid this.


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Advocate IV
Advocate IV

There is a "hack" to get around this. If you use the HTTP Action (GET Method) and instead of using the Query fields (they must ALL be blank for this to work), you can put the queries as part of the URI. 




This allows one to overcome the limitations mentioned by different implementations of multiple query parameters. Another pitfall to avoid is if your queries have spaces in them. You can get around this by creating a variable for the URI string, and passing it in as a variable. 

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