Relative difference between the period estimated by variability processing and the value derived from the non-single star pipeline, relative to the latter, for the FPR sources that have a counterpart in the Gaia DR3 table of orbital parameters of non-single stars. Data points are color-coded by variability type according to the classification presented in Sect. 3 (blue: ellipsoidal variables; red: pulsating LPVs; green: LPVs with LSP).