  We report on the measurement of the analyzing power for the (vec)pp->ppeta
reaction with beam momenta of 2026 MeV/c and 2188 MeV/c performed with the
WASA-at-COSY detector at the Cooler Synchrotron COSY. The eta meson from the
(vec)pp-> ppeta reaction was identified by the techniques of missing mass and
invariant mass. The angular distribution of the determined analyzing power
strongly disagree with theoretical predictions. A comparison of the obtained Ay
angular distribution with a series of associated Legendre polynomials revealed
negligible contribution of the Sd partial wave at Q = 15 MeV. However, at Q =
72 MeV, a significant interference of the Ps and Pp partial waves was observed.
