We have investigated the proton transfer reactions $^{86}\mathrm{Sr}(d,n)^{87}\mathrm{Y}$, $^{87}\mathrm{Sr}(d,n)^{88}\mathrm{Y}$, and $^{88}\mathrm{Sr}(d,n)^{89}\mathrm{Y}$ at 12 MeV incident deuteron energy. Spectroscopic factors are extracted from a distorted wave Born approximation analysis and compared to the spectroscopic factors extracted from the analogous ($^{3}\mathrm{He},d$) reactions. A comparison is also made of the ($d,n$) and ($d,^{3}\mathrm{He}$) reactions to determine fractional emptiness and occupation probability of shell model orbitals. Additionally, ground state proton configurations of $^{86}\mathrm{Sr}$ and $^{88}\mathrm{Sr}$ are determined and the ${T}_{l}$ states of $^{89}\mathrm{Y}$ are studied.NUCLEAR REACTIONS $^{86,87,88}\mathrm{Sr}(d,n)$, ${E}_{d}=12$ MeV; measured angular distributions. Deduced spectroscopic factors, ground state configurations. Enriched targets.