The current RemoteControl API function get_participant_properties is setup so that you can set query parameters to find a participant, and according to the documentation (https://api.limesurvey.org/classes/remotecontrol-handle.html#method_get_participant_properties), it gives an error if there are multiple results. It does not allow providing multiple tokenIds to get the properties of multiple participants at a time.

I'd like to request a version of this (maybe as a new endpoint), where i can supply a list of tokenIds and get the participant properties for all of those. Note that it should be clear which properties are for which token, so either make sure to include the id in the result as well, or return the properties in the same order as requested.

If you want to make it more generic and also use query parameters (not needed if it was up to me), then definitely include the token id in the response, or at least allow me to specify that i want to have the tokenId in a aTokenProperties parameter, just like the existing get_participant_properties. In that case also don't return an error if there are multiple matches.