Distributions of various elemental-abundance ratios from the APOGEE-2 survey for bulge field stars in close proximity to the Galactic Centre (−20° < l < 20° and |b| < 20°), and comparison with stars in NGC 6723. The field-star abundances are represented by orange iso-abundance contours. The member stars of NGC 6723 and the extra-tidal star analyzed in this work are shown with black and red open circles, respectively. The circle sizes reflect their V_o magnitudes, with decreasing size for fainter magnitudes. The blue cross symbol denotes the average ⟨[X_i/Fe]⟩ and its associated star-to-star scatter (σ_{⟨[Xi/Fe]⟩}) of the abundance derived from the seven member NGC 6723 stars analyzed in this work.