See:
Honey Locust (Gleditsia spp.) - Canker
Notes Necrotic light brown cankers occur at nodes on affected stems. Older cankers are elliptical with a raised margin of callus. Wood underneath canker is discolored brown. Ariel hyphae may occur when incubated under moist conditions.
References Huang, L., Yang, J., Li, Q., Zhang, Y. and Ye, J. 2017. Identification of the pathogen causing stem canker on Sophora japonica Linn. var. japonica f. pendula Hort. Journal of Nanjing Forestry University, 41:175-179.