Greetings R Community, I am trying to run a quantile regression using the quantreg package. My code looks as follows: RegressionUtilitiesUK<-rq(ReturnUtilities~yield.spread.change+ReturnFTSE, tau=0.01,data=State_variables_UK_calm) Unfortunately, the summary() function returns the results but also following warning message: Warning message: In rq.fit.br(x, y, tau = tau, ...) : Solution may be nonunique My question now is if I should worry about the results. Are my results correct and how can I avoid this message? I do not understand the message. Thanks a lot for your feedback. [[alternative HTML version deleted]]